Here's how. The cellist can choose from a number of pre-set options like "High, fast notes" or "Low Chords" to get the red enemy on screen to adopt a different tactic. The players have to work around what he's doing, coordinating with their teammates while also listening to the music to anticipate his next move. I particularly like that there's a special melody that clears out half of the screen. The Melody of Doom!