I just got this game today, and being a complete novice to GH didn't know what to expect. It's amazing, I have barely been able to put it down since getting it. I was unsure as to whether I would be able to play it, and I was very happy to find that it is challenging enough so that I have to work, and even retry a few songs, but it's not so difficult I can't get passed them. It is not too easy or too hard.
The songs are ok, I prefer the track listings to some of the other games but overall I wouldn't complain. Some great classics on here.