guitar
Sure can!. Guitar Hero Instrument's work with all Rock band games also.
In Guitar Hero World Tour, you can use the guitar and mic from rock band to play. just not the drumset. But anything before world tour, that would be a no.
No, you can choose which instrument you want to play (Guitar, Bass, Drums or Mic)
no, because they are from different companys and are diffrent gaming stations.
i dont think u can because im pretty sure even if you recallibrated it
No, you can use a guitar hero guitar on rock band
Rock Band does let you use the controller, but can only be used if you have a singer in the band.
yes
Certainly.
yes you can
Yes...
Yes.