Terry Riley (born June 24 1935) is an American composer associated with the minimalist school.
Also during the 1960s were the famous "All-Night Concerts", during which Riley performed mostly improvised music from evening until sunrise, using an old organ harmonium ("with a vacuum cleaner motor blower blowing into the ballasts") and tape-delayed saxophone. When he finally wanted a break, after hours of playing, he played back looped saxophone fragments recorded throughout the evening. For several years he continued to put on these concerts, to which people came with sleeping bags, hammocks, and their whole families.
Riley began his long-lasting association with the Kronos Quartet by meeting its founder, David Harrington, while at Mills. Over the course of his career Riley has composed 13 string quartets for the ensemble, in addition to other works. He wrote his first orchestral piece, Jade Palace, in 1991, and has continued to pursue that avenue, with several commissioned orchestral compositions following. Riley is also currently performing and teaching both as an Indian raga vocalist and as a solo pianist.
His music is usually based on improvising through a series of modal figures of different lengths, such as in In C and the Keyboard Studies. In C (1964) is probably Riley's best-known work and one that brought the minimalist music movement to prominence. Its first performance was given by Steve Reich, Jon Gibson, Pauline Oliveros, and Morton Subotnick, among others, and it has influenced their work and that of many others, including John Adams and Philip Glass. Its form was an innovation: the piece consists of 53 separate modules of roughly one measure apiece, each containing a different musical pattern but each, as the title implies, in C. One performer beats a steady pulse of Cs on the piano to keep tempo. The others, in any number and on any instrument, perform these musical modules following a few loose guidelines, with the different musical modules interlocking in various ways as time goes on. The Keyboard Studies are similarly structured – a single-performer version of the same concept.
In the 1950s he was already working with tape loops, a technology then in its infancy, and he has continued manipulating tapes to musical effect, both in the studio and in live performance, throughout his career. He has composed in just intonation as well as microtonal pieces.
Riley's collaborators include the Rova Saxophone Quartet, Pauline Oliveros, and, as mentioned, the Kronos Quartet.
He has also had a notable collaboration with Beat poet Michael McClure, with whom he has released several CDs and most recently contributed music to a London revival of his play The Beard.
A Rainbow In Curved Air inspired Pete Townshend's synthesizer parts on The Who's "Won't Get Fooled Again" and "Baba O'Riley", the latter named in tribute to Riley as well as to Meher Baba.