Possible Clues:

• Blab, informally
• Loving cares might make this so musical
• Just one short invoice, perhaps
• Do this twice and it may get you to jail
• A sentence might get one at the double there to make 28 across
• 'It's snowing out now,' you cry
• Do a tune
• Celebrate tennis match the French lost
• Carol is both evil and good
• Do a medley, say