So I just stumbled on this. When you pause a song by pressing the Playstation button (PS3) and then continue by pressing it again, you go back to the game screen. But here's the kicker: you can keep it paused by holding one of the frets, so you can actually anticipate the upcoming notes.
Not sure if this is a glitch or if it was intended, but it works a lot better than comingout of the pause menu in RB2. I would love to see this 'feature' in RB3. Does it work the same on XBOX?
I'm not sure if anybody noticed this before -- I tried searching for it, but couldn't find anything on the subject. As this is something that a lot of people have been asking about, I decided to post it anyway.