My grandson saw an advert showing a guitar that you play and Xbox and Wii were mentioned. We haven't seen the advert since. I know it's a longshot, but does anyone recognise it?
It's better explained on good ol' Wikipedia:
https://en.wikipedia.org/wiki/Guitar_Hero
where you'll see that the latest version (which your grandson has probably seen advertised is 'Guitar Hero Live').
Randy, Wii version of the instrument can connect with the console only via USB but you cannot connect this with other console for example Xbox and PS3.