Possible Clues:

• Instrument for getting firm out of rotten mess
• Musical instrument — frozen dessert
• Blimey! Supermarket no longer selling ice cream
• Something to blow series of forgotten rock'n'rollers from the ground
• Instrument, somewhat forgotten, rockets to the sky
• Officer playing rotten old horn
• In small shelter rent out old historical wind instrument
• Fantastic tenor and another briefly entering company, source of music
• It's blown over after company Romeo clear of all charges
• Old music maker spoiled rotten by firm