How will Harmonix squeeze the full band experience of Rock Band onto the instrument-free PSP? By making Rock Band Unplugged a spiritual sequel to Amplitude, Harmonix's critically beloved pre-Guitar Hero rhythm game.
First details on the recently announced Rock Band Unplugged from Primotech describe the peripheral-free game as a beat-matching rhythm title that uses the PSP's directional pad and buttons to play along with guitar, bass, drum and vocal tracks.