Capriccetto

A short or simple musical piece in a capricious or playful style, smaller than a full capriccio.

Italian diminutive of 'capriccio' (a whimsical musical form), from Italian 'capra' (goat) + 'riccio' (hedgehog), referring to the wild, unpredictable nature of the music. The '-etto' suffix indicates a smaller or lighter version.