No, you don't HAVE to. You can use only the guitar, or only the drums, or all of them.
no. but you need a guitar, or microphone and controller to play
No, net necessarily. You do need a Wii microphone
Yup :)
You only need 1. It is for the microphone.
Yes, but you need a microphone or a drum set.
You can use your Xbox360 Wireless headset to play!
No I tried it does not work at all
yes
yes because they both run off of usb ports
No a controller is not a Microphone and can not be one
As long as it is USB, any microphone should work with Rock Band. In fact, the Xbox Live headset even works as a microphone for this game.
you can with mic and guitar, but not drums