When they showed the different tracks and said you had to switch between them to play all the instruments I thought that was really interesting, cool and couldn't wait to try it out, so when I got the chance I started my game, created a band and put my headphones on.
Guitar hero and rock band are rhythm games but when switching between vocals, drums, bass and guitar. It's really hard to make any rhythm out of it. I remember failing songs in GH2 cause I was playing at night and didn't want to turn up the volume.
After playing a while of rock band unplugged. I found myself only looking sideways to the other tracks to see which one I had to switch to, and which button I had to press in order for the game to keep going.
At that time I dropped my headphones, you don't need to hear the music.
It feels like lumines or tetris that you are just looking to position those pieces that are falling down and you just need to get rid of instead of feeling the music and having the sensation that you are actually playing the notes in your plastic instrument.
I recommend you check out the demo at psn and see if you like it.