About Power Rangers Season 4, Episode 12 : Instrument of Destruction

King Mondo schemes to capture a mysterious Piano Player who keeps to the shadows at Angel Grove High, and plays the piano from music class after hours. Mondo intends to force him to play for Queen Machina's impending birthdaym a curious Adam is also interested in solving the mystery of the piano player's identity, and stumbles onto Mondo's plot. A pursuit begins, with the piano the victim, transformed into the monster Fortissimodo