Secret Devil Music

I dream I am part of a magic competition that takes place in the New York subway system. One of my competitors, I am led to understand, is the Evil One himself. I am not sure I'll recognize him, but I suspect my friend, Mitch. When it comes time to perform, I assume that Mitch is the Evil One, and when I see him draw near, I perform my secret devil music. As it turns out, Mitch is not the only demonic force--the other is a robot creature from the Jetsons.