As the conductor of this world famous orchestra it is your job to spot any saboteurs and deal with them. As the orchestra starts playing, you'll find that some musicians are playing out of tune (They will play red notes), click them and mute them to not disturb your performance.

There are difficulty settings (Press ESC), the harder the difficulty, the further from the saboteur the red note will spawn, and the shorter the red note will stay on the screen. Your score will of course be rewarded with extra points for harder difficulties.

There are volume settings and a colorblind mode. The colorblind mode makes sure no green notes appear, as to not confuse the red-green colorblinds.