"Bohemian Rhapsody" is in RB3, yeah. There's an achievement for getting perfect harmonies throughout the entire song, too.
I need to play more RB3.
Also, rereading this thread, the bit about the effects pedal port on the 360 Guitar Hero controller is funny, because the beatmania IIDX home controllers have the same thing for the same reason (though, it would've been used for beatmania III, which never got a home port).