Possible Clues:

• Haydn or Strauss, say
• Firm opening of Magnificat — problem for Bach?
• Maestro primarily inspired by work in creation of score?
• Writer doing his writing in bars produced Morse cop novel
• One producing pieces from organic bin missing tons
• Noted person about to be given honour — affected type
• Gibbons perhaps turn up tailless and sit by river
• Ms Cooper excited Mr Britten?
• Strange poem with orcs one writes in bars
• Morse, cop playing Wagner perhaps