Which artist believed himself to reveal the essence of his forms in his work?

What is the texture of Chopin's Mazurka in B-flatMajor, op. 7, no. 1?

a) polyphony with pervading imitation b) heterophony c) homophony with an occasional drone bass d) monophony

In Babbitt's Composition for Piano No. 1, the composer expanded the serial process from the twelve tones to include ____ as well

A) texture B) dynamics C) rhythm D) all of these choices