Who are 20th-century classical music university teacher peoples?

8

Marijan Gabrijelčič

7

Christian Wolff

American composer
5

Karlheinz Stockhausen

German composer
5

Jean Sibelius

Finnish composer of the late Romantic period
5

John Cage

American avant-garde composer (1912-1992)
4

Alfred Schnittke

German Soviet composer
4

Dmitri Kabalevsky

Russian composer