The Well-Tuned Piano [SEP] instrumentation
The Well-Tuned Piano
The Well-Tuned Piano is a long, improvisatory, solo piano work by composer La Monte Young. Begun in 1964, Young has never considered the composition or performance "finished", and he has performed incarnations of it several times since its debut in 1974. A typical performance lasts five to six hours. "The Guardian" described the piece as "one of the great achievements of 20th-century music."
Biography.
La Monte Young was born October 14, 1935
, like fellow minimalist composer Philip Glass with his group, altered the traditional route by which classical composers sought to have their music disseminated. The composer-led ensemble became a new model which was to be highly influential on the creation of groups such as Bang on a Can. 
Instrumentation.
The ensemble's instrumentation varies according to the piece being performed, but consists primarily of tuned percussion (marimbas, vibraphones, glockenspiels) and voices, as well as bowed string instruments, bass clarinets, and electronic organs.