The beta runs very nicely on my A1200 with 4MB FastRAM, and Rebel's A1200 030/50 with 32MB FastRAM, but the game should be playable on all AGA Amigas including CD32 by the time it's finished. You can even use a CD32 pad in the same way the guitar works, by holding down the corresponding button and "strumming" the D-pad. And some of the new music in this game is extremely catchy, I think a CD/MP3 Tracker Hero Official Soundtrack album would probably go down well too.
I'm going to try taking some videos of my own as soon as I can borrow a decent camera.