Isorhythm (from the Greek for "the same rhythm") is a musical technique using a repeating rhythmic pattern, called a talea, in at least one voice part throughout a composition. Taleae are typically applied to one or more melodic patterns of pitches or colores , which may be of the same or a different length from the talea.
Isorhythms first appear in French motets of the 13th century, such as in the Montpellier Codex . [1] Although 14th-century theorists used the words talea and color—the latter in a variety of senses related to repetition and embellishment [2] —the term isorhythm was coined in 1904 by musicologist Friedrich Ludwig, initially to describe the practice in 13th-century polyphony. Ludwig later extended its use to the 14th-century music of Guillaume de Machaut. Subsequently, Heinrich Besseler and other musicologists expanded its scope further as an organizing structural element in 14th- and early 15th-century compositions—in particular, motets. [3] [4] Some of the earliest works organized around isorhythms are early 14th-century motets by various composers in an illuminated manuscript of the Roman de Fauvel . Two of the era's most important composers of isorhythmic motets are Phillipe de Vitry and Guillaume de Machaut. [5] Machaut's second motet, De souspirant / Tous corps qui de bien amer / Suspiro, is an example of typical 14th-century use of isorhythm. [6]
Isorhythm is a logical outgrowth of the rhythmic modes that governed most late medieval polyphony. Discarding modal-rhythmic limitations, isorhythm became a significant organizing principle of much of 14th-century French polyphony by extending the talea of an initial section to the entire composition in conjunction with variation of a corresponding color. [7] "The playful complexity of ...[taleae] that mixes mensuration and undergoes diminution by half—became a typical, even a defining feature of motets in the 14th century and beyond". [4]
The structural diagram shows the isorhythmic tenor voice of a late 14th-century motet, Sub arturo plebs / Fons citharizantium / In omnem terram by Johannes Alanus (c. late 14th century), featuring threefold isorhythmic diminution.
During the decades following and into the 15th century, upper voices became increasingly involved in isorhythmic organization. Many compositions became isorhythmic in all voices, a practice known as panisorhythm. In such compositions, the length of the color and talea are often unequal, causing the repetition of the melody in differing rhythmic patterns. As an example, if the "color" includes nine notes and the "talea" five, the "color" would have to be repeated five times before the two schemes again realign. Examples can be found in motets and Mass movements by John Dunstable, Johannes Ciconia and Guillaume Du Fay. [6]
A 15th-century mass by a composer known only as Pycard found in the Old Hall manuscript (named for the English town in which it was eventually discovered), demonstrates the high sophistication and complexity of panisorhythmic techniques. The lower parts have a recurring color and talea that unite the composition. The upper parts have four different talea, one for each major section of the composition. The rhythmic relationship between upper and lower parts changes as the music progresses. Each quarter note in the lower part equals 41⁄2 quarter notes in the upper parts, creating an uneven ratio of 4:9 that causes the parts to lose synchronization. The lower part then steadily contracts in a series of Pythagorean proportions (12:9:8:6) until the parts come back into alignment. [9]
As an analytical concept, isorhythm has proven valuable for understanding musical practices in other cultures; for example, the peyote culture songs of certain North American Indian groups [7] and the music of India and Africa. [10]
Medieval music encompasses the sacred and secular music of Western Europe during the Middle Ages, from approximately the 6th to 15th centuries. It is the first and longest major era of Western classical music and is followed by the Renaissance music; the two eras comprise what musicologists generally term as early music, preceding the common practice period. Following the traditional division of the Middle Ages, medieval music can be divided into Early (500–1000), High (1000–1300), and Late (1300–1400) medieval music.
In Western classical music, a motet is mainly a vocal musical composition, of highly diverse form and style, from high medieval music to the present. The motet was one of the pre-eminent polyphonic forms of Renaissance music. According to the English musicologist Margaret Bent, "a piece of music in several parts with words" is as precise a definition of the motet as will serve from the 13th to the late 16th century and beyond. The late 13th-century theorist Johannes de Grocheo believed that the motet was "not to be celebrated in the presence of common people, because they do not notice its subtlety, nor are they delighted in hearing it, but in the presence of the educated and of those who are seeking out subtleties in the arts".
In music, a canon is a contrapuntal (counterpoint-based) compositional technique that employs a melody with one or more imitations of the melody played after a given duration. The initial melody is called the leader, while the imitative melody, which is played in a different voice, is called the follower. The follower must imitate the leader, either as an exact replication of its rhythms and intervals or some transformation thereof. Repeating canons in which all voices are musically identical are called rounds—familiar singalong versions of "Row, Row, Row Your Boat" and "Frère Jacques" that call for each successive group of voices to begin the same song a bar or two after the previous group began are popular examples.
Philippe de Vitry was a French composer-poet, bishop and music theorist in the ars nova style of late medieval music. An accomplished, innovative, and influential composer, he was widely acknowledged as a leading musician of his day; the early Renaissance scholar Petrarch wrote a glowing tribute, calling him: "... the keenest and most ardent seeker of truth, so great a philosopher of our age." The important music treatise Ars nova notandi (1322) is usually attributed to Vitry.
Ars nova refers to a musical style which flourished in the Kingdom of France and its surroundings during the Late Middle Ages. More particularly, it refers to the period between the preparation of the Roman de Fauvel (1310s) and the death of composer Guillaume de Machaut in 1377. The term is sometimes used more generally to refer to all European polyphonic music of the fourteenth century. For instance, the term "Italian ars nova" is sometimes used to denote the music of Francesco Landini and his compatriots, although Trecento music is the more common term for the contemporary 14th-century music in Italy. The "ars" in "ars nova" can be read as "technique", or "style". The term was first used in two musical treatises, titled Ars novae musicae by Johannes de Muris, and a collection of writings attributed to Philippe de Vitry often simply called "Ars nova" today. Musicologist Johannes Wolf first applied to the term as description of an entire era in 1904.
Ars subtilior is a musical style characterized by rhythmic and notational complexity, centered on Paris, Avignon in southern France, and also in northern Spain at the end of the fourteenth century. The style also is found in the French Cypriot repertory. Often the term is used in contrast with ars nova, which applies to the musical style of the preceding period from about 1310 to about 1370; though some scholars prefer to consider ars subtilior a subcategory of the earlier style. Primary sources for ars subtilior are the Chantilly Codex, the Modena Codex, and the Turin Manuscript.
The Old Hall Manuscript is the largest, most complete, and most significant source of English sacred music of the late 14th and early 15th centuries, and as such represents the best source for late Medieval English music. The manuscript somehow survived the Reformation, and formerly belonged to St. Edmund's College, a Roman Catholic school located at Old Hall Green in Hertfordshire. It was sold to the British Library after an auction at Sotheby's in 1973.
Mensural notation is the musical notation system used for polyphonic European vocal music from the late 13th century until the early 17th century. The term "mensural" refers to the ability of this system to describe precisely measured rhythmic durations in terms of numerical proportions amongst note values. Its modern name is derived from the terminology of medieval theorists, who used terms like musica mensurata or cantus mensurabilis to refer to the rhythmically defined polyphonic music of their age, as opposed to musica plana or musica choralis, i.e., Gregorian plainchant. Mensural notation was employed principally for compositions in the tradition of vocal polyphony, whereas plainchant retained its own, older system of neume notation throughout the period. Besides these, some solely instrumental music could be written in various forms of instrument-specific tablature notation.
France has a rich music history that was already prominent in Europe as far back as the 10th century. French music originated as a unified style in medieval times, focusing around the Notre-Dame school of composers. This group developed the motet, a specific musical composition. Notable in the high Middle Ages were the troubadours and trouvères soon began touring France, composing and performing many original songs. The styles of ars nova and ars subtilior sprung up in the 14th century, both of which focused on secular songs. As Europe moved into the Renaissance age, the music of France evolved in sophistication. The popularity of French music in the rest of Europe declined slightly, yet the popular chanson and the old motet were further developed during this time. The epicenter of French music moved from Paris to Burgundy, as it followed the Burgundian School of composers. During the Baroque period, music was simplified and restricted due to Calvinist influence. The air de cour then became the primary style of French music, as it was secular and preferred by the royal court.
Messe de Nostre Dame is a polyphonic mass composed before 1365 by French poet and composer Guillaume de Machaut. Widely regarded as one of the masterpieces of medieval music and of all religious music, it is historically notable as the earliest complete setting of the Ordinary of the Mass attributable to a single composer.
The Montpellier Codex is an important source of 13th-century French polyphony. The Codex contains 336 polyphonic works probably composed c. 1250–1300, and was likely compiled c. 1300. It is believed to originate from Paris. It was discovered by musicologist Edmond de Coussemaker in c. 1852.
Nuper rosarum flores, is a motet composed by Guillaume Dufay for the 25 March 1436 consecration of the Florence Cathedral, on the occasion of the completion of the dome built under the instructions of Filippo Brunelleschi. Technically, the dome itself was not finished until five months later, at which time a separate consecration was celebrated by Benozzo Federighi, the bishop of Fiesole, substituting for the newly appointed archbishop of Florence, Cardinal Vitelleschi. The work has "come to be treated as an icon in the history of Western musical culture".
Johannes Alanus was an English composer. He wrote the motet Sub arturo plebs/Fons citharizancium/In omnem terram. Also attributed to him are the songs "Min frow, min frow" and "Min herze wil all zit frowen pflegen", both lieds, and "S'en vos por moy pitié ne truis", a virelai. O amicus/Precursoris, attributed simply to "Johannes", may be the work of the same composer.
Grimace was a French composer-poet in the ars nova style of late medieval music. Virtually nothing is known about Grimace's life other than speculative information based on the circumstances and content of his five surviving compositions of formes fixes; three ballades, a virelai and rondeau. His best known and most often performed work in modern-times is the virelai and proto-battaglia: A l’arme A l’arme.
The 1360s in music involved some significant events.
Sub Arturo plebs – Fons citharizantium – In omnem terram is an isorhythmic motet of the second part of the 14th century, written by an English composer known by the name of Johannes Alanus or John Aleyn. It stands in the tradition of the Ars nova, the fourteenth-century school of polyphonic music based in France. It is notable for the historical information it provides about contemporary music life in England, and for its spectacularly sophisticated use of complex rhythmic devices, which mark it as a prime example of the stylistic outgrowth of the Ars nova known today as Ars subtilior. It has been dated conjecturally to either around 1358, which, within that school of composition, would make its compositional technique exceptionally innovative for its own time, or some time later during the 1370s.
In medieval music theory, the terms color and coloration are used in four distinct senses, two of which relate to the notation and structuring of note durations, the third to florid ornamentation, and the fourth to the quality of chromatic music.
Vasilissa ergo gaude is an isorhythmic motet by the Renaissance composer Guillaume Dufay. In terms of its subject matter, it is sometimes grouped together with Lamentatio sanctae matris ecclesiae Constantinopolitanae, Apostolus gloriosus and Balsamus et munda cera which are generically called Dufay's Byzantine motets. Its composition was occasioned by the marriage on 21 January 1421 of Cleofa Malatesta, daughter of Malatesta di Pandolfo, to Theodore II Palaiologos, son of the Byzantine emperor Manuel II and Despot of the Morea. It has been surmised that the actual motet was composed in 1420 and is perhaps the earliest example of this choral form if not the earliest work attributed to Dufay. In earlier scholarship it was assumed that the motet's first performance had taken place on May 19, 1419, during the festivities prior to the marriage
The 1340s in music involved some events.
The 1320s in music involved some events.
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