Xenakis at the Aspen Music Festival August 10

From AspenTimes.com:

In its annual recital, the Aspen Music Festival and School’s Percussion Ensemble will perform “Persephassa,” by the Greek composer Iannis Xenakis. The avant-garde pioneer also was a music theorist, mathematician and architect. In this rarely performed piece, which debuted in 1969, Xenakis combined his expertise in science and music. Due to technological limitations, it’s never been performed exactly as Xenakis intended, Percussion Ensemble director Jonathan Haas said.