noun
melody, air, aria, song, harmony, strain, theme, piece, number, ditty, jingle, a few bars; see also melody 2, song.
call the tune*
change one's tune*
change one's mind, alter one's actions, be transformed; see change 4,
sing a different tune*
change one's mind, alter one's actions, be transformed; see change 4. See syn. study at melody.