I saw this more as an information delivery foundation, rather than a music/tab tutorial. Honestly, you could put anything in there, and that's the beauty. You potentially have a very sleek, web2.0, way to tell people about anything.
BUG: running through sheet music, then tablature leaves you with a menu button to click on. clicking this takes you back to the menu, but another instance of the music starts again over the original. a bit distracting.
Your main menu was more much nicely animately than the rest of the slides. i'd like it if this was consistent.
You intermingle text and images that contain text. this seems inconsistent.
im no musician, but perhaps someone learned something? i mean, don't they make whole books on this stuff? i'd say you were a bit too concise, in which case explaining this topic might not be appropriate for a flash movie.
remember your audience too. this is a fine display of work, but are people getting any utility out of it? There's probably not too many people coming to NG looking for this. SURE, there are some, but imo, not enough to make it worth while. it seems like you got a webpage. put this on there.