OnTheGo Piano is a game similar to Guitar Hero/Rock Band played with a custom pocket piano. This controller is made with a dismantled USB keyboard and the game played on a smartphone screen. The device provides a full octave, where the main notes and the minors are mapped on the same key and switched in the software. OnTheGo Piano contains about 250 notes in 12 “songs”. The more successful the player is the more difficult the game gets.