Imagined as an interface for collaborative music making, this new genre of synthesizer invites participants to use their entire body to play music. When the disk rests against the edge of the base, it plays a note. Walking around the edge strings the notes together into a melody. When the disk is parallel to the ground, a melody is unlocked and plays for as long as the disk is balanced. The longer you keep your balance on the disk, the more the melody grows.