Possible Clues:

• Play to win
• A lover's song
• Winning number, it is hoped, for the lady
• Lay under window
• Play up to someone you want to gain favour with
• Have the Danes e'er a bit music that's not for the day?
• Piece of music for courtship
• Lied, perhaps, in an endeavour to win
• Carol composed about the present time
• Love music