The structural diagram at right 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.
32.
The structural diagram at right 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.
33.
Guillaume Dufay was a transitional figure in this regard; he wrote one of the last important motets in the medieval, isorhythmic style, " Nuper rosarum flores " ( 1436 ), written to commemorate the completion of Filippo Brunelleschi's dome in the Cathedral of Florence.
34.
Of the works attributed to him only about fifty survive, among which are two complete masses, three sets of connected mass sections, fourteen individual mass sections, twelve complete isorhythmic motets ( including the famous one which combines the hymn " Salve Regina, Mater misericordiae ".
35.
In the 14th century, the technique continued to be widely used for most sacred vocal music, although considerable elaboration began to appear : while most continental composers used isorhythmic methods, in England other composers experimented with a " migrant " cantus firmus, in which the tune moved from voice to voice, however without itself being elaborated significantly.
36.
He is also often credited with developing the concept of isorhythm ( an isorhythmic line consists of repeating patterns of rhythms and pitches, but the patterns overlap rather than correspond; e . g ., a line of thirty consecutive notes might contain five repetitions of a six-note melody or six repetitions of a five-note rhythm ).
37.
Frye's style in his masses was typical of English music of the period, the " Contenance Angloise ", using full triadic sonorities, and sometimes isorhythmic techniques; he contrasted full-voiced textures with passages for only two voices, which became a characteristic sound of the polyphony of the late 15th and early 16th centuries.
38.
He describes the structural characteristics of California-Yuman music, including that of Pomo, Miwak, Luiseno, Catalineno, and Gabrielino, and the Yuman tribes, including, Mohave, Yuman, Havasupai, Maricopa, as using the rise in almost all songs, a relaxed nonpulsating vocal technique ( like European classical music ), a relatively large amount of isorhythmic material, some isorhythmic tendencies, simple rhythms, pentatonic scales without semitones, an average melodic range of an octave, sequence, and syncopated figures such as a sixteenth-note, eight-note, sixteenth-note figure.
39.
He describes the structural characteristics of California-Yuman music, including that of Pomo, Miwak, Luiseno, Catalineno, and Gabrielino, and the Yuman tribes, including, Mohave, Yuman, Havasupai, Maricopa, as using the rise in almost all songs, a relaxed nonpulsating vocal technique ( like European classical music ), a relatively large amount of isorhythmic material, some isorhythmic tendencies, simple rhythms, pentatonic scales without semitones, an average melodic range of an octave, sequence, and syncopated figures such as a sixteenth-note, eight-note, sixteenth-note figure.
40.
Recently, however, Michael Lanford has noted that " of the 148 double and triple motets in fascicles two through five of the " Montpellier Code " x, 114 have repeating colores . " After analyzing several motets, he also demonstrates that " each of Richard Hoppin's'three isorhythmic procedures'which inform'future developments of the form'can be found in select tenors from the Old Corpus [ of the " Montpellier Codex " ], often in ways that demonstrate resourceful approaches to managing the rhythmic modes . " For these reasons, Lanford contends that " by glossing over the presence of isorhythmic techniques in thirteenth-century motets, such as those found in fascicles two through five of the " Montpellier Codex ", scholars have thus limited the appellation of'isorhythm'using criteria that is well-reasoned, yet perhaps unnecessarily restrictive ."
