Possible Clues:

• Music from 'The Tin Soldiers' getting an encore
• Bach creation
• Bach specialty
• Is one able so to bid farewell in song?
• Record rubbish, a musical composition
• One way to preserve so long a piece of music
• Able to thank one more than once for such music
• Is thanks able to be so sung?
• Hypocrisy towards a musical piece
• Is such music unable to express one's thanks?