Klayton (AKA Celldweller) with a stand-in for Stutter the studio cat (I don't have a tabby cat friend).
He uses a computer to make much of his music. The hanging black stars are for his "Wish Upon A Blackstar" album, and the heart shirt is for the line from "Heart On", "I pin my heart to my sleeve so the whole world can see I have a heart on for you."