Related Clues:

• Perhaps the way the sewer might become vocal?
• It might be a sewer, perhaps, but sounds nice
• Sewer with 7 down?
• The sort of sewer for a song
• That'll give you the music of the sewer
• A sewer for 34 across
• An invoice for a sewer
• One might have one in stitches in opera
• One might have an invoice for such a sewer, perhaps
• One's invoice, perhaps, has one in stitches
• Looks like a sewer for 11 across, by the sound of it
• Ten or one for a man, by the sound of it
• Maybe ten or a scorcher, perhaps
• Bass perhaps for the invoice
• Are, in short, in fresh flight up