Possible Clues:

• Composer of the piano piece played by Bugs Bunny in "Rhapsody Rabbit"
• Virtuoso pianist's record picked up
• Great player giving tip to the audience?
• Great pianist listened to record
• Sound tip for virtuoso pianist
• Composer’s last letter found in register
• Composer of the piano piece played in the 'Tom and Jerry' short 'The Cat Concerto'
• .. this composer had a pronounced leaning for ..
• Musician Franz at last cuts record
• Elizabeth Taylor initially accepting singular musical heart-throb from the past