Can you use a Guitar Hero 4 guitar on Guitar Hero 5?

yes indeed you can use a guitar hero 4 guitar on guitar hero 5... in fact, if you have drums, microphone, or guitar from ANY guitar hero pack.. you will be able to use any of them with any guitar hero package which include ALL of the GUITAR HERO PACKS..

** Guitar hero 1

** Guitar hero 2, 3, 4, , 5, and even on band hero