Unplanned; a Short Piano Piece
This page is the CodyCross answer for the clue below from Amusement Park, Group 214, Puzzle 4 (Games of Chance).
Question is: Unplanned; a Short Piano Piece
and the answer is: IMPROMPTU
Word Meaning:
IMPROMPTU — Improvised; without prior preparation, planning or rehearsal.
Definitions from Wiktionary.