Microtonal music is
music using microtones --
intervals of less than a
semitone, or as
Charles Ives put it, the "notes between the
cracks" of the piano. The term is also used to refer to any music whose
tuning is not based on semitones, such as western
just intonation, Indonesian
gamelan music and
Indian classical music. An alternative term explicitly covering
such possibilities is
xenharmonic music.
The Italian
Renaissance composer and theorist
Nicola Vicentino (1511-1576) [1] (http://www.hoasm.org/IVO/Vicentino.html) experimented with microintervals and built for
example a keyboard with 36 keys to the octave, known as the
arcicembalo. However Vicentino's experiments were primarily motivated by his research (as he saw it) on
the ancient Greek
genera, and by his desire to have acoustically pure
intervals available within chromatic compositions.
Some Western composers have embraced the use of microtonal
scales,
dividing an octave into 19, 24, 31, 43, 72 and other numbers of
pitches, rather than the more common 12. The intervals between pitches can be
equal, creating an
equal temperament, or unequal, such as in
just intonation or
linear temperament.
Pioneers of modern Western microtonal music include:
Microtonal scales that are played contiguously are chromatically microtonal, those which are not use the various contiguous
pitches as alternative versions of larger intervals (Burns, 1999).
The American
hardcore punk band
Black Flag (1976-86) made interesting vernacular use of microtonal intervals, via guitarist
Greg Ginn, a
free jazz aficionado also
familiar with modern classical. (During their peak, long before American punk was mainstream, the band was considered as a
thuggish and hostile street-unit -- time has given their work an amount of musical acclaim.) A worthwhile song is "Damaged II,"
from 1981's Damaged LP -- a live-in-studio recording in which intentional use of quarter- and eighth-steps suggests the
guitar as in danger of detonation. Another is the solo of "Rise Above," from the same album, which ends with a phrase played
sharp, to similar effect.
See also