Iannis Xenakis formed CEMAMu (Centre d'Etudes de Mathématiques et Automatiques Musicales / Center for Studies in Mathematics and Automated Music) in Paris in 1972.
Xenakis' interest in graphical interfaces, led him to invent the UPIC (Unité Polyagogique Informatique du CEMAMu) in 1977.
Instead of a keyboard to perform the music, the UPIC's performance device is a mouse and/or a digital drawing board. These are used to trace the composer's graphic score into the UPIC computer program, which it interprets the drawings as real time instructions for sound synthesis.
Mycenae Alpha is the first work entirely realized on the UPIC.
[Xenakis, UPIC, Continuum - Electroacoustic & Instrumental works from CCMIX Paris]