Possible Clues:

• Lure with music
• Entice with music
• Dainty, oddly dulcet strum
• Chirp
• ... dum and ...dee, characters in Through the Looking Glass
• Play casually on the river Lune's banks
• Sing like a bird
• Whistle that is nominally shared by two quarrelling brothers
• Lure using music
• Sing shrilly