Tomasz Sikorski - Echa II (1961-1963)

Full title (Polish): "Echa II" na 1-4 fortepiany, perkusję i taśmę"
Full title (English): "Echoes II" for 1-4 pianos, percussion and tape
Year(s): 1961-1963
Instrumentation: 1, 2, 3 or 4 pianos, percussion, tape
Other Details/Notes: Tape part performed by Bohdan Mazurek and Eugeniusz Rudnik in Polish Radio Experimental Studio.
First Performance: 1964