Possible Clues:

• Canary, at times
• Point to barrel-shaped singer
• Drunk brawler is capable of producing a song
• Fats changes first line to R 'n' B for songster
• Quavering singer
• and 4 Down and 14 Down: Oddly, I being a dropout, our uni ordered new high table -- to mark this occasion?
• Singer with broken barrel
• Diminutive songbird
• Flyer fighting the French in the outskirts of Barfleur
• Singer about to return after nasty brawl