He is behind you, always, and he is sound activated. If you continue to make a lot of noise, he will slowly become more active, crashing his cymbals together faster and faster, finally ending your run with a startling face-to-face jumpscare.
Music Man is a purchasable Heavy Animatronic in Catalog Mode. The animatronic can be purchased for $19000.
Music Man's facial expression is seemingly static with two large black eyes, two small purple cheeks, a large pink nose, two pink eyebrows, a purple cleft chin, and a long row of teeth.
He has six legs which resemble the legs of a spider on a round body. His pink and white striped torso contains a speaker like most of the Funtime animatronics do with 2 smaller speakers above and below and has a Funtime-styled appearance, but has no sign of faceplates or detachable casing. He also holds a cymbal in each of his hands and wears a black top hat with a white stripe.