Definition: a series of musical notes that are pleasant to listen to Level: C1
我忘不掉那段旋律；它太朗朗上口了！
I can't get that ___tune out of my head; it's so catchy!
洗碗时，她心不在焉地哼着一首欢快的曲子。
While washing up, she absentmindedly hummed a cheerful ___tune.
这首歌欢快的曲调让每个人都想跳舞。
The song's upbeat ___tune makes everyone want to dance.
