Sound · b. 1903 · Yingkou, Liaoning Province, China Boris Blacher Biography Boris Blacher was a German-Baltic composer, librettist, and composition teacher. Other Credits Abstrakte Oper No. 1 Sound 1979 Heinrich Heine Music 1971 Aleph Music 1968 Gerichtstag Original Music Composer 1966 Interferenzen Original Music Composer 1965 Stresemann Music 1957 Death Camp Sachsenhausen Music 1947 Agent-readable