How many guitars does rock band comes with?

I think you mean the video game, Rock band...

ONE guitar.

it can be from one to five.....but usually three : lead, rhythm and bass.

ya mean the game right? I think it just come with the one unless u get te whole package. I wouldn't know for sure though, I dont have it.

One guitar

if your talking about the game its 1

Cream had one guitar, one bass and drums, The Travelling Wilburys had five guitars

It comes with one guitar, one microphone, and one drum set w/ real drumsticks. If you have Guitar Hero 3, those guitars are compatible with Rock Band. This will enable you to play the bass or have two guitars at the same time. If you don't have Guitar Hero 3, you can buy an extra guitar.