Source: Wikipedia. Davidovsky passed away yesterday at age 85.
Mario Davidovsky (March 4, 1934 – August 23, 2019) was an Argentine-American composer. Born in Argentina, he emigrated in 1960 to the United States, where he lived for the remainder of his life. He is best known for his series of compositions called Synchronisms, which in live performance incorporate both acoustic instruments and electroacoustic sounds played from a tape.