So we're big enough nerds to pay close attention to the music in our games, and while playing Mega Man 9 extensively, we were thrilled by the sound of the BGM.  As such, we managed to sneak a couple of clips of music from the show floor.  It's bad quality (terribly sorry for the clipping and flat quality), but it's listenable... and it'll give you an idea of what type of stuff to expect when the game releases.

You've been warned about the quality--now enjoy the clips! :)

Concrete Man's Theme (Bad Quality)
Plug Man's Theme (Bad Quality)

-Steve