Aha! At last! I had this game on a floppy disc back in the '80s. It was buggy and would crash, so I never got to actually play it. The opening chords would ring, and then my guy would fall through the floor. The weirdest part of Usher? The "game over" screen, and it's cryptic message:
"The real Earl of Usher is Spider-Man."
What the hell is that?! Does ANYBODY know what that was supposed to mean?