Karlheinz Stockhausen -- Mantra.

Composed in 1970, Stockhausen’s “Mantra“ is a duet for piano written for the Donaueschingen Festival. It is Stockhausen’s first completely scored piece after a long string of largely improvised compositions. Here both pianists play ring-modulated pianos, cymbals, and a wood block. One player is also controlling a recording of Morse code. The purpose of this composition was to explore the idea of a musical “mantra“. The repetition of sounds are intended to place both the audience and the musicians themselves