HPSCHD is a composition by which music theorist and writer?
HPSCHD HPSCHD (pronounced as acronym: eɪtʃ-piː-ɛs-siː-eɪtʃ-di:, although Cage himself said the title is "Harpsichord"), is a composition for harpsichord and computer-generated sounds by American avant-garde composers John Cage (1912–1992) and Lejaren Hiller (1924–1994). It was written between 1967 and 1969 and was premiered on May 16, 1969, at the Experimental Music Studios at the University of Illinois at Urbana–Champaign.
Wordless functional analysis Wordless functional analysis is a method of musical analysis developed in the 1950s by the Austrian-born British musician and writer Hans Keller. The method is notable in that, unlike other forms of musical analysis, it is designed to be presented "in musical sound alone", without any words being heard or read, and without analytic diagrams of any kind. For this purpose, Keller would construct an analysis in the form of an "analytic score" written for the same forces as the work under consideration and structured as a succession of 'analytic interludes' designed to be played between its movements.