Possible Clues:

• Naff harmonic (anag.)
• Russian composer and pianist whose prelude in C sharp minor became so popular that he tired of playing it
• Composer's note in arrangement for harmonica -- fortissimo
• Sounds like something in snooker hall for chap describing fluke shot to composer
• Russian composer and piano virtuoso
• Composer discovers new fan from China
• Eternal preoccupation of romantic novelist
• Crazy March in F of an exiled composer
• Russian composer, 1873-1943
• Piano virtuoso playing harmonica note very loudly