Yeah, I came to realize that it doesn't always matter if you know 100% of the actual notes from the recording. It's even possible to think of a variation that sounds better. But as long as what I'm playing sounds like the song and good to a backing track, that's all that matters. But I used to obsess over finding every note from the recording.

But that is really surprising that they send it to the artists for approval. If that is the case, I'm sure a lot of artists will sign off on something that's close enough. Because now that I've been spending a lot of times with some of these books, I know for a fact there are some inaccuracies here and there. The Avenged Sevenfold one comes to mind in particular. Rocksmith actually has a much more accurate version of it, but you'd have to take the time to play it on the game or at least use the game to tab it out yourself (which is what I did!)

~Rusty