A chord chart (or chart) is a form of musical notation that describes the basic harmonic and rhythmic information for a song or tune. It is the most common form of notation used by professional session musicians playing jazz or popular music. It is intended primarily for a rhythm section (usually consisting of piano, guitar, drums and bass). In these genres the musicians are expected to be able to improvise the individual notes used for the chords (the "voicing") and the appropriate ornamentation, counter melody or bassline.
In some chord charts, the harmony is given as a series of chord symbols above a traditional musical staff. The rhythmic information can be very specific and written using a form of traditional notation, sometimes called rhythmic notation, or it can be completely unspecified using slash notation, allowing the musician to fill the bar with chords or fills any way they see fit (called comping ). In Nashville notation the key is left unspecified on the chart by substituting numbers for chord names. This facilitates on-the-spot key changes to songs. Chord charts may also include explicit parts written in modern music notation (such as a musical riff that the song is dependent on for character), lyrics or lyric fragments, and various other information to help the musician compose and play their part.
Rhythmic notation specifies the exact rhythm in which to play or comp the indicated chords. The chords are written above the staff and the rhythm is indicated in the traditional manner, though pitch is unspecified through the use of slashes placed on the center line instead of notes. This is contrasted with the less specific slash notation. [1]
Slash notation is a form of purposefully vague musical notation which indicates or requires that an accompaniment player or players improvise their own rhythm pattern or comp according to the chord symbol given above the staff. On the staff a slash is placed on each beat (so that there are four slashes per measure in 4/4 time). [1]
Slash notation and rhythmic notation may both be used in the same piece, for example, with the more specific rhythmic notation used in a section where the horn section is playing a specific melody or rhythmic figure that the pianist must support, and with slash notation written for the pianist for use underneath improvised solos.
Nashville notation or Nashville Number System [2] is a method of notating chord changes using numbers based on scale degrees, in lieu of chord names. For example, in the key of C-Major, the chord D-minor-seventh can be written as 2−7
, 2m7
, or ii7
.
"The musicians in Nashville use the Nashville Number System almost exclusively for conveying a song's structure and arrangement in the recording studio." [3]
In Nashville Notation, the chord numbers map to the chord built diatonically on each scale degree in the Major key -- or the closest relative Major key -- of the song.
Chord number | Key of C | Key of G |
---|---|---|
1 | C-Major | G-Major |
2- | D-minor | A-minor |
3- | E-minor | B-minor |
4 | F-Major | C-Major |
5 | G-Major | D-Major |
6- | A-minor | E-minor |
7o | B-diminished | F#-diminished |
Chords can be built in the same way for all twelve Major keys. [4]
Therefore, in the key of C, this chord progression
| C / / / | F / / / | G / / / | C / / / |
--and in the key of G, this chord progression
| G / / / | C / / / | D / / / | G / / / |
--in Nashville notation, the chord chart for both would be notated as
1 4 5 1
By convention, Nashville notation eliminates the slashes and bar lines that denote the beats in the measure: "With the number system it’s understood that each number written on your chart is given the value of one measure of music. In 4/4 time, that’s a total of four beats per number on the chart." [5]
This method of notation allows musicians who are familiar with basic music theory to play the same song in any key.
In some European countries (particularly France), pop and jazz musicians often use so-called "chord grids" that show in a graphical way the chord progression. To illustrate, below is an example of two-part tunes, each eight bars long. Each square stands for a bar, while the "•/•”symbol means to stay on the same chord as the previous bar. The song structure can then be written down as a succession of the different parts. For example A-A-B-A, that would mean to play twice the "A" part, once the "B" part, and then again once the "A" part.
Squares can also be separated diagonally for bars having two chords, as in the example below:
Digital representations of chord charts enable musicians to create, store and distribute song arrangements using computer systems, computer networks and the internet.
A plain text (ASCII) representation of digital chord charts supports broad compatibility across computer systems and devices, since ASCII text files can be serialized to disk, transmitted via email, shared through cloud storage services, and displayed in text editors that are preinstalled on most operating systems.
Below is a non-exhaustive list of plain text chord chart representations, including examples for reference. (You can help improve this article by adding other plain text representations of chord charts to this section.)
Chord charts can be represented schematically, where:
To illustrate, the following ASCII text represents the first verse of the public domain hymn Amazing Grace, in 3/4 meter:
Amazing Grace (Traditional) Verse 1: | G / / | G7 / / | C / / | G / / | | G / / | G/B / / | D / / | D7 / / | | G / / | G7/B / / | C / / | G / G/F# | | Em / / | G/D / D7 | G / / | G / / ||
The performer should interpret this such that each chord symbol occupies one beat, with each slash signifying that the preceding chord should be played for additional beats, represented by the number of additional slashes after the chord symbol. For example, the first measure (bar) of this chord chart consists of three beats of the G-Major chord.
A more compact form of this could be represented as:
Amazing Grace (Traditional) Verse 1: | G | G7 | C | G | | G | G/B | D | D7 | | G | G7/B | C | G / G/F# | | Em | G/D / D7 | G | G ||
The term "chord chart" can also describe a plain ASCII text, digital representation of a lyric sheet where chord symbols are placed above the syllables of the lyrics where the performer should change chords. [6]
Continuing with the Amazing Grace example, a "chords over lyrics" version of the chord chart could be represented as follows:
Amazing Grace (Traditional) [Verse 1] G G7 C G Amazing grace, how sweet the sound G G/B D D7 That saved a wretch like me G G7/B C G I once was lost, but now I'm found G/F# Em G/D D7 G Was blind, but now I see
ChordPro is one ASCII file representation standard for the aforementioned style of lyric sheet, but instead of placing the chords above the lyrics, the chords changes are placed inline with the lyrics, directly preceding the lyrical syllable where the chords should change. Given a ChordPro format input file, the ChordPro program outputs a format similar to the aforementioned "chords over lyrics" format. [7]
In ChordPro format, Amazing Grace could be notated as follows:
{title: Amazing Grace} {key: G} {start_of_verse} A-[G]mazing [G7]grace, how [C]sweet the [G]sound That [G]saved a [G/B]wretch like [D]me [D7] I [G]once was [G7/B]lost, but [C]now I'm [G]found [G/F#]Was [Em]blind, but [G/D]now [D7]I [G]see {end_of_verse}
ChordPro files often have the file extensions .cho, .crd, .chopro, .chord and .pro, but could also have the common .txt extension.
Multiple open source and commercial software support ChordPro format chord charts, including:
Figured bass is musical notation in which numerals and symbols appear above or below a bass note. The numerals and symbols indicate intervals, chords, and non-chord tones that a musician playing piano, harpsichord, organ, or lute should play in relation to the bass note. Figured bass is closely associated with basso continuo: a historically improvised accompaniment used in almost all genres of music in the Baroque period of Classical music, though rarely in modern music. Figured bass is also known as thoroughbass.
Musical notation is any system used to visually represent music. Systems of notation generally represent the elements of a piece of music that are considered important for its performance in the context of a given musical tradition. The process of interpreting musical notation is often referred to as reading music.
Sheet music is a handwritten or printed form of musical notation that uses musical symbols to indicate the pitches, rhythms, or chords of a song or instrumental musical piece. Like its analogs – printed books or pamphlets in English, Arabic, or other languages – the medium of sheet music typically is paper. However, access to musical notation since the 1980s has included the presentation of musical notation on computer screens and the development of scorewriter computer programs that can notate a song or piece electronically, and, in some cases, "play back" the notated music using a synthesizer or virtual instruments.
In music, a chord is a group of three or more notes played simultaneously, typically consisting of a root note, a third, and a fifth. Chords are the building blocks of harmony and form the harmonic foundation of a piece of music. They can be major, minor, diminished, augmented, or extended, depending on the intervals between the notes and their arrangement. Chords provide the harmonic support and coloration that accompany melodies and contribute to the overall sound and mood of a musical composition. For many practical and theoretical purposes, arpeggios and other types of broken chords may also be considered as chords in the right musical context.
Accompaniment is the musical part which provides the rhythmic and/or harmonic support for the melody or main themes of a song or instrumental piece. There are many different styles and types of accompaniment in different genres and styles of music. In homophonic music, the main accompaniment approach used in popular music, a clear vocal melody is supported by subordinate chords. In popular music and traditional music, the accompaniment parts typically provide the "beat" for the music and outline the chord progression of the song or instrumental piece.
In the music theory of harmony, the root is a specific note that names and typifies a given chord. Chords are often spoken about in terms of their root, their quality, and their extensions. When a chord is named without reference to quality, it is assumed to be major—for example, a "C chord" refers to a C major triad, containing the notes C, E, and G. In a given harmonic context, the root of a chord need not be in the bass position, as chords may be inverted while retaining the same name, and therefore the same root.
In jazz, comping is the chords, rhythms, and countermelodies that keyboard players, guitar players, or drummers use to support a musician's improvised solo or melody lines. It is also the action of accompanying, and the left-hand part of a solo pianist.
Braille music is a braille code that allows music to be notated using braille cells so music can be read by visually impaired musicians. The system was incepted by Louis Braille.
The numbered musical notation is a cipher notation system used in mainland China, Taiwan, Hong Kong, and to some extent in Japan, Indonesia, Malaysia, Australia, Ireland, the United Kingdom, the United States and English-speaking Canada. It dates back to the system designed by Pierre Galin, known as Galin-Paris-Chevé system. It is also known as Ziffernsystem, meaning "number system" or "cipher system" in German.
Song structure is the arrangement of a song, and is a part of the songwriting process. It is typically sectional, which uses repeating forms in songs. Common piece-level musical forms for vocal music include bar form, 32-bar form, verse–chorus form, ternary form, strophic form, and the 12-bar blues. Popular music songs traditionally use the same music for each verse or stanza of lyrics. Pop and traditional forms can be used even with songs that have structural differences in melodies. The most common format in modern popular music is introduction (intro), verse, pre-chorus, chorus, verse, pre-chorus, chorus, bridge, and chorus, with an optional outro. In rock music styles, notably heavy metal music, there is usually one or more guitar solos in the song, often found after the middle chorus part. In pop music, there may be a guitar solo, or a solo performed with another instrument such as a synthesizer or a saxophone.
In music theory, chord substitution is the technique of using a chord in place of another in a progression of chords, or a chord progression. Much of the European classical repertoire and the vast majority of blues, jazz and rock music songs are based on chord progressions. "A chord substitution occurs when a chord is replaced by another that is made to function like the original. Usually substituted chords possess two pitches in common with the triad that they are replacing."
ASCII tab is a text file format used for writing guitar, bass guitar and drum tabulatures that uses plain ASCII numbers, letters and symbols. It is the only widespread file format for representing tabulature, and is extensively used for disseminating tabulature via the Internet.
Jazz harmony is the theory and practice of how chords are used in jazz music. Jazz bears certain similarities to other practices in the tradition of Western harmony, such as many chord progressions, and the incorporation of the major and minor scales as a basis for chordal construction. In jazz, chords are often arranged vertically in major or minor thirds, although stacked fourths are also quite common. Also, jazz music tends to favor certain harmonic progressions and includes the addition of tensions, intervals such as 9ths, 11ths, and 13ths to chords. Additionally, scales unique to style are used as the basis of many harmonic elements found in jazz. Jazz harmony is notable for the use of seventh chords as the basic harmonic unit more often than triads, as in classical music. In the words of Robert Rawlins and Nor Eddine Bahha, "7th chords provide the building blocks of jazz harmony."
In music, especially modern popular music, a slash chord or slashed chord, also compound chord, is a chord whose bass note or inversion is indicated by the addition of a slash and the letter of the bass note after the root note letter. It does not indicate "or". For example, a C major chord (C) in second inversion is written C/G or C/G bass, which reads "C slash G", "C over G" or "C over a G bass". Some chords may not otherwise be notated, such as A♭/A. Thus, a slash chord may also indicate the chord form or shape and an additional bass note.
In music theory, the half-diminished seventh chord is a seventh chord composed of a root note, together with a minor third, a diminished fifth, and a minor seventh. For example, the half-diminished seventh chord built on B, commonly written as Bm7(♭5), or Bø7, has pitches B-D-F-A:
The Nashville Number System is a method of transcribing music by denoting the scale degree on which a chord is built. It was developed by Neal Matthews Jr. in the late 1950s as a simplified system for the Jordanaires to use in the studio and further developed by Charlie McCoy. It resembles the Roman numeral and figured bass systems traditionally used to transcribe a chord progression since the 1700s. The Nashville Number System was compiled and published in a book by Chas. Williams in 1988.
The Nashville Number System is a trick that musicians use to figure out chord progressions on the fly. It is an easy tool to use if you understand how music works. It has been around for about four hundred years, but sometime during the past fifty years [approximately 1953–2003], Nashville got the credit.
The Nashville numbering system provided us the shorthand that we needed so that we could depend on our ears rather than a written arrangement. It took far less time to jot the chords, and once you had the chart written, it applied to any key. The beauty of the system is that we don't have to read. We don't get locked into an arrangement that we may feel is not as good as one we can improvise.
In music theory, Roman numeral analysis is a type of harmonic analysis in which chords are represented by Roman numerals, which encode the chord's degree and harmonic function within a given musical key.
Tablature is a form of musical notation indicating instrument fingering or the location of the played notes rather than musical pitches.
Musicians use various kinds of chord names and symbols in different contexts to represent musical chords. In most genres of popular music, including jazz, pop, and rock, a chord name and its corresponding symbol typically indicate one or more of the following:
The ChordPro format is a text-based markup language for representing chord charts by describing the position of chords in relation to the song's lyrics. ChordPro also provides markup to denote song sections, song metadata, and generic annotations.
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