An album is a collection of audio recordings issued as a collection on compact disc (CD), vinyl, audio tape, or another medium. Albums of recorded music were developed in the early 20th century as individual 78-rpm records collected in a bound book resembling a photograph album; this format evolved after 1948 into single vinyl LP records played at 33 1⁄3 rpm. Vinyl LPs are still issued, though album sales in the 21st-century have mostly focused on CD and MP3 formats. The audio cassette was a format widely used alongside vinyl from the 1970s into the first decade of the 2000s.
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. The format was originally developed to store and play only sound recordings (CD-DA) but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. The first commercially available audio CD player, the Sony CDP-101, was released October 1982 in Japan.
A phonograph record, often simply record, is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the periphery and ends near the center of the disc. At first, the discs were commonly made from shellac; starting in the 1940s polyvinyl chloride became common. Since then, gradually, records made of any material began to be called vinyl records, or simply vinyl.
The LP is an analog sound storage medium, a vinyl record format characterized by a speed of 33 1⁄3 rpm, a 12- or 10-inch diameter, and use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry. Apart from a few relatively minor refinements and the important later addition of stereophonic sound, it has remained the standard format for vinyl albums.
An album may be recorded in a recording studio (fixed or mobile), in a concert venue, at home, in the field, or a mix of places. The time frame for completely recording an album varies between a few hours to several years. This process usually requires several takes with different parts recorded separately, and then brought or "mixed" together. Recordings that are done in one take without overdubbing are termed "live", even when done in a studio. Studios are built to absorb sound, eliminating reverberation, so as to assist in mixing different takes; other locations, such as concert venues and some "live rooms", have reverberation, which creates a "live" sound.Recordings, including live, may contain editing, sound effects, voice adjustments, etc. With modern recording technology, musicians can be recorded in separate rooms or at separate times while listening to the other parts using headphones; with each part recorded as a separate track.
A recording studio is a specialized facility for sound recording, mixing, and audio production of instrumental or vocal musical performances, spoken words, and other sounds. They range in size from a small in-home project studio large enough to record a single singer-guitarist, to a large building with space for a full orchestra of 100 or more musicians. Ideally both the recording and monitoring spaces are specially designed by an acoustician or audio engineer to achieve optimum acoustic properties.
A take is a single continuous recorded performance. The term is used in film and music to denote and track the stages of production.
In sound recording and reproduction, audio mixing is the process of combining multitrack recordings into a final mono, stereo or surround sound product. In the process of combining the separate tracks, their relative levels are adjusted and balanced and various processes such as equalization and compression are commonly applied to individual tracks, groups of tracks, and the overall mix. In stereo and surround sound mixing, the placement of the tracks within the stereo field are adjusted and balanced. Audio mixing techniques and approaches vary widely and have a significant influence on the final product.
Album covers and liner notes are used, and sometimes additional information is provided, such as analysis of the recording, and lyrics or librettos.Historically, the term "album" was applied to a collection of various items housed in a book format. In musical usage the word was used for collections of short pieces of printed music from the early nineteenth century. Later, collections of related 78rpm records were bundled in book-like albums (one side of a 78 rpm record could hold only about 3.5 minutes of sound). When long-playing records were introduced, a collection of pieces on a single record was called an album; the word was extended to other recording media such as compact disc, MiniDisc, Compact audio cassette, and digital albums as they were introduced.
An album cover is the front of the packaging of a commercially released audio recording product, or album. The term can refer to either the printed cardboard covers typically used to package sets of 10 in (25 cm) and 12 in (30 cm) 78-rpm records, single and sets of 12 in (30 cm) LPs, sets of 45 rpm records, or the front-facing panel of a CD package, and, increasingly, the primary image accompanying a digital download of the album, or of its individual tracks.
Liner notes are the writings found on the sleeves of LP record albums and in booklets which come inserted into the compact disc jewel case or the equivalent packaging for vinyl records and cassettes.
Lyrics are words that make up a song usually consisting of verses and choruses. The writer of lyrics is a lyricist. The words to an extended musical composition such as an opera are, however, usually known as a "libretto" and their writer, as a "librettist". The meaning of lyrics can either be explicit or implicit. Some lyrics are abstract, almost unintelligible, and, in such cases, their explication emphasizes form, articulation, meter, and symmetry of expression. Rappers can also create lyrics that are meant to be spoken rhythmically rather than sung.
An album (Latin albus, white), in ancient Rome, was a board chalked or painted white, on which decrees, edicts and other public notices were inscribed in black. It was from this that in medieval and modern times album came to denote a book of blank pages in which verses, autographs, sketches, photographs and the like are collected.Which in turn led to the modern meaning of an album as a collection of audio recordings issued as a single item.
An Album, in ancient Rome, was a board chalked or painted white, on which decrees, edicts and other public notices were inscribed in black.
In the early nineteenth century "album" was occasionally used in the titles of some classical music sets, such as Schumann's Album for the Young Opus 68, a set of 43 short pieces.
Robert Schumann was a German composer, pianist, and influential music critic. He is widely regarded as one of the greatest composers of the Romantic era. Schumann left the study of law, intending to pursue a career as a virtuoso pianist. His teacher, Friedrich Wieck, a German pianist, had assured him that he could become the finest pianist in Europe, but a hand injury ended this dream. Schumann then focused his musical energies on composing.
Album for the Young, Op. 68, was composed by Robert Schumann in 1848 for his three daughters. The album consists of a collection of 43 short works. Unlike the Kinderszenen, they are suitable to be played by children or beginners. The second part, starting at Nr. 19, is marked Für Erwachsenere and contains more demanding pieces.
When 78rpm records came out, the popular 10-inch disc could only hold about three minutes of sound per side, so almost all popular recordings were limited to around three minutes in length. 59s. Deutsche Grammophon had produced an album for its complete recording of the opera Carmen in 1908. German record company Odeon released the Nutcracker Suite by Tchaikovsky in 1909 on 4 double-sided discs in a specially designed package. This practice of issuing albums does not seem to have been widely taken up by other record companies for many years; however, HMV provided an album, with a pictorial cover, for the 1917 recording of The Mikado (Gilbert & Sullivan).Classical-music and spoken-word items generally were released on the longer 12-inch 78s, about 4–5 minutes per side. For example, in 1924, George Gershwin recorded a drastically shortened version of the seventeen-minute Rhapsody in Blue with Paul Whiteman and His Orchestra. It was released on two sides of Victor 55225 and ran for 8m
George Gershwin was an American composer and pianist whose compositions spanned both popular and classical genres. Among his best-known works are the orchestral compositions Rhapsody in Blue (1924) and An American in Paris (1928), the songs Swanee (1919) and Fascinating Rhythm (1924), the jazz standard I Got Rhythm (1930), and the opera Porgy and Bess (1935) which spawned the hit Summertime.
Rhapsody in Blue is a 1924 musical composition by the American composer George Gershwin for solo piano and jazz band, which combines elements of classical music with jazz-influenced effects.
Paul Samuel Whiteman was an American bandleader, composer, orchestral director, and violist.
By about 1910, bound collections of empty sleeves with a paperboard or leather cover, similar to a photograph album, were sold as record albums that customers could use to store their records (the term "record album" was printed on some covers). These albums came in both 10-inch and 12-inch sizes. The covers of these bound books were wider and taller than the records inside, allowing the record album to be placed on a shelf upright, like a book, suspending the fragile records above the shelf and protecting them. In the 1930s, record companies began issuing collections of 78 rpm records by one performer or of one type of music in specially assembled albums, typically with artwork on the front cover and liner notes on the back or inside cover. Most albums included three or four records, with two sides each, making six or eight compositions per album.
The 10-inch and 12-inch LP record (long play), or 33 1⁄3 rpm microgroove vinyl record, is a gramophone record format introduced by Columbia Records in 1948. A single LP record often had the same or similar number of tunes as a typical album of 78s, and it was adopted by the record industry as a standard format for the "album". Apart from relatively minor refinements and the important later addition of stereophonic sound capability, it has remained the standard format for vinyl albums.
The term "album" was extended to other recording media such as Compact audio cassette, compact disc, MiniDisc, and digital albums, as they were introduced.As part of a trend of shifting sales in the music industry, some observers feel that the early 21st century experienced the death of the album.
An album may contain as many or as few tracks as required. In the United States, The Recording Academy's rules for Grammy Awards state that an album must comprise a minimum total playing time of 15 minutes with at least five distinct tracks or a minimum total playing time of 30 minutes with no minimum track requirement.In the United Kingdom, the criteria for the UK Albums Chart is that a recording counts as an "album" if it either has more than four tracks or lasts more than 25 minutes. Sometimes shorter albums are referred to as "mini-albums" or EPs. Albums such as Tubular Bells , Amarok , Hergest Ridge by Mike Oldfield, and Yes's Close to the Edge , include fewer than four tracks, but still surpass the 25-minute mark. There are no formal rules against artists such as Pinhead Gunpowder referring to their own releases under thirty minutes as "albums".
If an album becomes too long to fit onto a single vinyl record or CD, it may be released as a double album where two vinyl LPs or compact discs are packaged together in a single case, or a triple album containing three LPs or compact discs. Recording artists who have an extensive back catalogue may re-release several CDs in one single box with a unified design, often containing one or more albums (in this scenario, these releases can sometimes be referred to as a "two (or three)-fer"), or a compilation of previously unreleased recordings. These are known as box sets. Some musical artists have also released more than three compact discs or LP records of new recordings at once, in the form of boxed sets, although in that case the work is still usually considered to be an album.
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Material (music or sounds) is stored on an album in sections termed tracks, normally 11 or 12 tracks. A music track (often simply referred to as a track) is an individual song or instrumental recording. The term is particularly associated with popular music where separate tracks are known as album tracks; the term is also used for other formats such as EPs and singles. When vinyl records were the primary medium for audio recordings a track could be identified visually from the grooves and many album covers or sleeves included numbers for the tracks on each side. On a compact disc the track number is indexed so that a player can jump straight to the start of any track. On digital music stores such as iTunes the term song is often used interchangeably with track regardless of whether there is any vocal content.
A bonus track (also known as a bonus cut or bonus) is a piece of music which has been included as an extra. This may be done as a marketing promotion, or for other reasons. It is not uncommon to include singles as bonus tracks on re-issues of old albums, where those tracks weren't originally included. Online music stores allow buyers to create their own albums by selecting songs themselves; bonus tracks may be included if a customer buys a whole album rather than just one or two songs from the artist. The song is not necessarily free nor is it available as a stand-alone download, adding also to the incentive to buy the complete album. In contrast to hidden tracks, bonus tracks are included on track listings and usually do not have a gap of silence between other album tracks. Bonus tracks on CD or vinyl albums are common in Japan for releases by European and North American artists; since importing international copies of the album can be cheaper than buying a domestically-released version, Japanese releases often feature bonus tracks to incentivize domestic purchase.
Commercial sheet music are published in conjunction with the release of a new album (studio, compilation, soundtrack, etc.). A matching folio songbook is a compilation of the music notation of all the songs included in that particular album. It typically has the album's artwork on its cover and, in addition to sheet music, it includes photos of the artist.Most pop and rock releases come in standard Piano/Vocal/Guitar notation format (and occasionally Easy Piano / E-Z Play Today). Rock-oriented releases may also come in Guitar Recorded Versions edition, which are note-for-note transcriptions written directly from artist recordings.
Vinyl LP records have two sides, each comprising one-half of the album. If a pop or rock album contained tracks released separately as commercial singles, they were conventionally placed in particular positions on the album.During the Sixties, particularly in the UK, singles were generally released separately from albums. Today, many commercial albums of music tracks feature one or more singles, which are released separately to radio, TV or the Internet as a way of promoting the album. Albums have been issued that are compilations of older tracks not originally released together, such as singles not originally found on albums, b-sides of singles, or unfinished "demo" recordings.
Double albums during the Seventies were sometimes sequenced for record changers. In the case of a two-record set, for example, sides 1 and 4 would be stamped on one record, and sides 2 and 3 on the other. The user would stack the two records onto the spindle of an automatic record changer, with side 1 on the bottom and side 2 (on the other record) on top. Side 1 would automatically drop onto the turntable and be played. When finished, the tone arm's position would trigger a mechanism which moved the arm out of the way, dropped the record with side 2, and played it. When both records had been played, the user would pick up the stack, turn it over, and put them back on the spindle—sides 3 and 4 would then play in sequence.Record changers were used for many years of the LP era, but eventually fell out of use.
8-track tape (formally Stereo 8: commonly known as the eight-track cartridge, eight-track tape, or simply eight-track) is a magnetic tape sound recording technology popular in the United Statesfrom the mid-1960s to the late 1970s when the Compact Cassette format took over. The format is regarded as an obsolete technology, and was relatively unknown outside the United States, the United Kingdom, Canada and Australia.
Stereo 8 was created in 1964 by a consortium led by Bill Lear of Lear Jet Corporation, along with Ampex, Ford Motor Company, General Motors, Motorola, and RCA Victor Records (RCA). It was a further development of the similar Stereo-Pak four-track cartridge created by Earl "Madman" Muntz. A later quadraphonic version of the format was announced by RCA in April 1970 and first known as Quad-8, then later changed to just Q8.
The Compact Cassette was a popular medium for distributing pre-recorded music from the early 1970s to the early 2000s.The very first "Compact Cassette" was introduced by Philips in August 1963 in the form of a prototype. Compact Cassettes became especially popular during the 1980s after the advent of the Sony Walkman, which allowed the person to control what they listened to. The Walkman was convenient because of its size, the device could fit in most pockets and often came equipped with a clip for belts or pants. Compact cassettes also saw the creation of mixtapes, which are tapes containing a compilation of songs created by any average listener of music. The songs on a mixtape generally relate to one another in some way, whether it be a conceptual theme or an overall sound. The compact cassette used double-sided magnetic tape to distribute music for commercial sale. The music is recorded on both the "A" and "B" side of the tape, with cassette being "turned" to play the other side of the album. Compact Cassettes were also a popular way for musicians to record "Demos" or "Demo Tapes" of their music to distribute to various record labels, in the hopes of acquiring a recording contract. The sales of Compact Cassettes eventually began to decline in the 1990s, after the release and distribution Compact Discs. After the introduction of Compact discs, the term "Mixtape" began to apply to any personal compilation of songs on any given format. Recently there has been a revival of Compact Cassettes by independent record labels and DIY musicians who prefer the format because of its difficulty to share over the internet.
The compact disc format replaced both the vinyl record and the cassette as the standard for the commercial mass-market distribution of physical music albums.After the introduction of music downloading and MP3 players such as the iPod, US album sales dropped 54.6% from 2001 to 2009. The CD is a digital data storage device which permits digital recording technology to be used to record and play-back the recorded music.
Most recently, the MP3 audio format has matured, revolutionizing the concept of digital storage. Early MP3 albums were essentially CD-rips created by early CD-ripping software, and sometimes real-time rips from cassettes and vinyl.
The so-called "MP3 album" is not necessarily just in MP3 file format, in which higher quality formats such as FLAC and WAV can be used on storage media that MP3 albums reside on, such as CD-R-ROM s, hard drives, flash memory (e.g. thumbdrives, MP3 players, SD cards), etc.[ citation needed ]
The contents of the album are usually recorded in a studio or live in concert, though may be recorded in other locations, such as at home (as with JJ Cale's Okie ,Beck's Odelay , David Gray's White Ladder , and others), in the field - as with early Blues recordings, in prison, or with a mobile recording unit such as the Rolling Stones Mobile Studio.
Most albums are studio albums — that is, they are recorded in a recording studio with equipment meant to give those overseeing the recording as much control as possible over the sound of the album. They minimize external noises and reverberations and have highly sensitive microphones and sound mixing equipment. In some studios, each member of a band records their part in separate rooms (or even at separate times, while listening to the other parts of the track with headphones to keep the timing right). In recent years, with the advent of email, it has become possible for musicians to record their part of a song in another studio in another part of the world, and send their contribution over email to be included in the final product.
An album may be recorded in a recording studio (fixed or mobile), in a concert venue, at home, in the field, or a mix of places. The recording process may occur within a few hours or may take several years to complete, usually in several takes with different parts recorded separately, and then brought or "mixed" together. Recordings that are done in one take without overdubbing are termed "live", even when done in a studio. Studios are built to absorb sound, eliminating reverberation, so as to assist in mixing different takes; other locations, such as concert venues and some "live rooms", allow for reverberation, which creates a "live" sound.
Concert or stage performances are recorded using remote recording techniques. Live albums may be recorded at a single concert, or combine recordings made at multiple concerts. They may include applause and other noise from the audience, comments by the performers between pieces, improvisation, and so on. They may use multitrack recording direct from the stage sound system (rather than microphones placed among the audience), and can employ additional manipulation and effects during post-production to enhance the quality of the recording. Comedy albums, in particular, are most often recorded live because the audience reaction is part of the cue that the comedian is succeeding.[ citation needed ]
Live double albums emerged during the 1970s. Appraising the concept in Christgau's Record Guide: Rock Albums of the Seventies (1981), Robert Christgau said most "are profit-taking recaps marred by sound and format inappropriate to phonographic reproduction (you can't put sights, smells, or fellowship on audio tape). But for Joe Cocker and Bette Midler and Bob-Dylan-in-the-arena, the form makes a compelling kind of sense."
The best-selling live album worldwide is Garth Brooks' Double Live , which shipped over 10.5 million 2-CD sets in the United States alone as of November 2006. 's 500 Greatest Albums of All Time 18 albums were live albums.[ citation needed ]In Rolling Stone
A solo album, in popular music, is an album recorded by a current or former member of a musical group which is released under that artist's name only, even though some or all other band members may be involved. The solo album appeared as early as the late 1940s. A 1947 Billboard magazine article heralded "Margaret Whiting huddling with Capitol execs over her first solo album on which she will be backed by Frank De Vol".There is no formal definition setting forth the amount of participation a band member can solicit from other members of his band, and still have the album referred to as a solo album. One reviewer wrote that Ringo Starr's third venture, Ringo , "[t]echnically... wasn't a solo album because all four Beatles appeared on it". Three of the four members of the Beatles released solo albums while the group was officially still together.
A performer may record a solo album for a number of reasons. A solo performer working with other members will typically have full creative control of the band, be able to hire and fire accompanists, and get the majority of the proceeds.[ citation needed ] The performer may be able to produce songs that differ widely from the sound of the band with which the performer has been associated, or that the group as a whole chose not to include in its own albums. Graham Nash of The Hollies described his experience in developing a solo album as follows: "The thing that I go through that results in a solo album is an interesting process of collecting songs that can't be done, for whatever reason, by a lot of people". A solo album may also represent the departure of the performer from the group.
A tribute or cover album is a collection of cover versions of songs or instrumental compositions. Its concept may involve various artists covering the songs of a single artist, genre or period, a single artist covering the songs of various artists or a single artist, genre or period, or any variation of an album of cover songs which is marketed as a "tribute".
Cassette culture refers to the practices associated with amateur production and distribution of recorded music that emerged in the late 1970s via home-made audio cassettes. It is characterized by the adoption of home recording by independent artists, and involvement in ad-hoc self-distribution and promotion networks—primarily conducted through mail and fanzines. The culture was in part an offshoot of the mail art movement of the 1970s and 1980s, and participants engaged in tape trading in addition to traditional sales. The culture is related to the DIY ethic of punk, and encouraged musical eclecticism and diversity.
In the music industry, a single is a type of release, typically a song recording of fewer tracks than an LP record or an album. This can be released for sale to the public in a variety of different formats. In most cases, a single is a song that is released separately from an album, although it usually also appears on an album. Typically, these are the songs from albums that are released separately for promotional uses such as digital download or commercial radio airplay and are expected to be the most popular. In other cases a recording released as a single may not appear on an album.
An extended play record, often referred to as an EP, is a musical recording that contains more tracks than a single, but is usually unqualified as an album or LP. Contemporary EPs generally contain a minimum of three tracks and maximum of six tracks, and are considered "less expensive and time-consuming" for an artist to produce than an album. An EP originally referred to specific types of vinyl records other than 78 rpm standard play (SP) and LP, but it is now applied to mid-length CDs and downloads as well.
Monaural or monophonic sound reproduction is sound intended to be heard as if it were emanating from one position. This contrasts with stereophonic sound or stereo, which uses two separate audio channels to reproduce sound from two microphones on the right and left side, which is reproduced with two separate loudspeakers to give a sense of the direction of sound sources. In mono, only one loudspeaker is necessary, but, when played through multiple loudspeakers or headphones, identical signals are fed to each speaker, resulting in the perception of one-channel sound "imaging" in one sonic space between the speakers. Monaural recordings, like stereo ones, typically use multiple microphones fed into multiple channels on a recording console, but each channel is "panned" to the center. In the final stage, the various center-panned signal paths are usually mixed down to two identical tracks, which, because they are identical, are perceived upon playback as representing a single unified signal at a single place in the soundstage. In some cases, multitrack sources are mixed to a one-track tape, thus becoming one signal. In the mastering stage, particularly in the days of mono records, the one- or two-track mono master tape was then transferred to a one-track lathe intended to be used in the pressing of a monophonic record. Today, however, monaural recordings are usually mastered to be played on stereo and multi-track formats, yet retain their center-panned mono soundstage characteristics.
Brain Salad Surgery is the fourth studio album by English progressive rock band Emerson, Lake & Palmer, released on 19 November 1973 by their own record label, Manticore Records, and distributed by Atlantic Records.
A double album is an audio album which spans two units of the primary medium in which it is sold, typically records and compact disc. A double album is usually, though not always, released as such because the recording is longer than the capacity of the medium. Recording artists often think of double albums as comprising a single piece artistically; however, there are exceptions such as John Lennon's Some Time in New York City and Pink Floyd's Ummagumma and OutKast's Speakerboxxx/The Love Below. Another example of this approach is Works Volume 1 by Emerson Lake and Palmer, where side one featured Keith Emerson, side two Greg Lake, side three Carl Palmer, and side four was by the entire group.
1999 is the fifth studio album by American recording artist Prince, and the first to feature his band the Revolution. It was released on October 27, 1982, by Warner Bros. Records.
Venus and Mars is the fourth studio album by Wings, and the sixth album by Paul McCartney after the breakup of the Beatles in 1970. Released in 1975 as the follow-up to Band on the Run, Venus and Mars continued Wings' run of commercial success and would prove a springboard for a year-long worldwide tour. The album was McCartney's first post-Beatles album to be released worldwide on the Capitol Records label rather than Apple.
I Robot is the second studio album by British progressive rock band The Alan Parsons Project, released on 1 June 1977 by Arista Records. The album draws conceptually on author Isaac Asimov's science fiction Robot trilogy, exploring philosophical themes regarding artificial intelligence. It was re-released on vinyl and cassette tape in 1984 and on CD 2007.
Record collecting is the hobby of collecting sound recordings, usually of music and/or the "spoken word", but, in some cases, even of other recorded sounds. Although the typical focus is on vinyl records, all formats of recorded music can be collected.
The SPARS code is a three-position alphabetic classification system developed in the early 1980s by the Society of Professional Audio Recording Services (SPARS) for commercial compact disc releases to denote aspects of the sound recording and reproduction process, distinguishing between the use of analog equipment and digital equipment. The code's three positions refer to recording, mixing, and mastering respectively. The first two positions may be coded either "A" for analog or "D" for digital; the third position (mastering) is always "D" on digital CDs. The scheme was not originally intended to be limited to use on digital packaged media: it was also available for use in conjunction with analog releases such as vinyl or cassette, but this was never done in practice.
A maxi single or maxi-single is a music single release with more than the usual two tracks of an A-side song and a B-side song.
M.O.T.O. is a garage punk band currently based in New Hampshire. Formed in New Orleans in 1981 by Paul Caporino, the lineup of the band has seen many changes over the years, with Caporino being the only consistent member. The band has recorded many albums, singles and CDs, including several albums for the Chicago-based record label Criminal IQ Records.
Lotus is a 1974 live album by the Latin rock band Santana, recorded at the Osaka Kōsei Nenkin Kaikan, Osaka, Japan in July 1973, during their Caravanserai Tour. It was originally released in 1974 as a triple vinyl LP in Japan only. This version of the album was later released internationally.
Captured in Time and Space is the first live album of Christian rock band Petra. The concert was re-released on DVD in 2006.
Multitrack recording of sound is the process in which sound and other electro-acoustic signals are captured on a recording medium such as magnetic tape, which is divided into two or more audio tracks that run parallel with each other. Because they are carried on the same medium, the tracks stay in perfect synchronisation, while allowing multiple sound sources to be recorded asynchronously. The first system for creating stereophonic sound was demonstrated by Clément Ader in Paris in 1881. The pallophotophone, invented by Charles A. Hoxie and first demonstrated in 1922, recorded optically on 35 mm film, and some versions used a format of as many as twelve tracks in parallel on each strip. The tracks were recorded one at a time in separate passes and were not intended for later mixdown or stereophony; as with later half-track and quarter-track monophonic tape recording, the multiple tracks simply multiplied the maximum recording time possible, greatly reducing cost and bulk. British EMI engineer Alan Blumlein patented systems for recording stereophonic sound and surround sound on disc and film in 1933. The history of modern multitrack audio recording using magnetic tape began in 1943 with the invention of stereo tape recording, which divided the recording head into two tracks.
Dig is an album by Miles Davis on Prestige Records, catalogue number 7012. It features tracks from a 1951 session at Apex Studios, remastered in 1956 by Rudy Van Gelder. First released in the twelve-inch format in 1956, Dig was later reissued as a compact disc with additional tracks. The original album was later released as Diggin' with the catalogue number PR 7281 and a different cover. That later version is the one currently widely available on vinyl although the expanded version of Dig is the one available on CD.
A mixtape is a compilation of music, typically from multiple sources, recorded onto a medium. With origins in the 1980s, the term normally describes a homemade compilation of music onto a cassette tape, CD, or digital playlist. The songs are either ordered sequentially or made into a continuous program by beatmatching the songs and creating seamless transitions at their beginnings and endings with fades or abrupt edits. Essayist Geoffrey O'Brien described this definition of the mixtape as "perhaps the most widely practiced American art form".
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