The amount of time and effort and angst spent on this game in this household is quite impressive. Be it moaning at the screen (especially when someone walks in front of it), complaining about someone else in the band sessions, watching YouTube videos of experts enviously, or sitting bemused at some of the efforts some people go through to get through the songs.
Still I can forgive it quite a lot. It has resulted in giving the kids a much, much wider appreciation of a range of music that they otherwise would never have been exposed to. It also means they get to know the songs incredibly well and they do attempt to play them on real instruments too.
As an example, Guitar Hero is singularly responsible for the introduction of the likes of Joe Satriani and Dream Theatre into the house. Still, the novelty wears off a little for them once I announce that I quite like them too …