Related Clues:

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