Which of the following is NOT mentioned in the passage? A. Tchaikovsky's influence on ballet music B. Tchaikovsky's unhappiness leading to suicide C. the patronage of Madame von Meck D. Tchai
Which of the following is NOT mentioned in the passage?
A. Tchaikovsky's influence on ballet music
B. Tchaikovsky's unhappiness leading to suicide
C. the patronage of Madame von Meck
D. Tchaikovsky's productivity in composing