plot:

Octave is a game where you play as the conductor of an orchestra who is being attacked by a group of people you rejected from the joining the orchestra. You have to stop the rejects from disturbing your show.

Game play:

Octave is an arena style side on beat'em up. You have to fight rejects while still conducting the orchestra. This means you must move in time with the music so that the musicians know when to play. You will play songs like wilhelm tell, flight of the valkyrie and Beethoven's 5th Symphony. You do this by attacking and dashing. You have a set of moves, punch, kick, dash, and jump. You must use these moves to stop the rejects from interrupting your show and signal your orchestra to play. As you move to the music you will build up a flow meter and you will do more damage while you have a high flow. If you don't attack or dash in time with the music your flow meter will empty and you will have to build it up again.