11. It refers to a style wherein the piece always sounds different at eve y performance
because of the random techniques of production
A Concrete Music
C. Chance Music
B. Avant Garde
D, Primitivistic
12. Who among them who was given a big break when he was asked to substitute
for the ailing Bruno Walter in conducting the New York PhilHarmoni: Orchestra?
A. Poulenc
C. Prokofieff
B. Bernstein
D. Bartok
​