I think I'm experiencing a bug in World Tour, but I can't find any mention of it on the official support site, and googling for anything GH related is a nightmare. Some of the lead guitar parts in certain songs are really quiet, and I think off beat, but it's hard to be sure about that because of the first problem. For example, if a guitar part in-game switches between an unplugged rhythm guitar and an electric lead, the rhythm part might be barely audible, and the lead part would come in loud and clear. It could be the other way around on a different song, but always the same way on the same song. It's especially obvious in "Go Your Own Way." I've also noticed it in "Band on the Run" and a couple others.
Has anyone heard of this problem before?