The PS3 controller is necessary to do the vocals, but you can play drums and Guitars without having a PS3 controller.
Yes.
no. but you need a guitar, or microphone and controller to play
yes you can play the beatles rock band with the xbox360 controller if you have an xbox and if your singing
u can play it on ps3 but you can't use the ps3 controller
Yes you can just plug it in and play
no, you will need the drum set, guitar etc.
it should be on the settings
Yes it is but you might have to play with the controller
Yes. I use my GH3 controller when I play Rock Band.
Nothing. Guitar Hero controllers are not compatible with Rock Band 1. They won't be until Harmonix and Activision have an agreement, then make a patch for it. You need to buy a Rock Band / 2 controller to play it.
Of coarse, You just need a different instrument. You can't have 4 people playing without singing. If you don't want to sing just play drums, bass, or guitar. (PS The full rock band is: Singer Drummer Bass Guitar. You can have the computer play any of these roles. You will need a controller. The bass and guitar controller is the same.)
yes. they are the same controller.