I'm updating my review as promised, because of the wonderful customer support provided by Aaron Stang at Alfred Music Publishing. I complained about the ever-present click tracks, and how those really ruin the fun, because they are generally so darned loud! Well, Alfred has addressed this issue... retroactively, even. I just can't ask for better customer service than that. This gets a 5 STAR rating, with no reservations. Having listened to the full tracks, including drums, it's easy to hear that these were performed, engineered, and produced by people with a real appreciation, maybe even a love, for Led Zeppelin. Little nuances like Bonham's signature snare sound, with just the right tone, attack, and even the right amount of "air" around it, are in evidence throughout. The guitar and bass sound like they're supposed to sound. If I were lucky enough to be on stage with these guys, I'd consider it a very good day, and would be beaming from ear to ear. There are some things I'd have fixed, but these are very minor nits, such as a strange way of handling the tempo increase in Stairway... it happens almost at once, during the breaks immediately before the guitar solo. A couple of other things, but minor, and not worth mentioning more than in passing. *Do not let these dissuade you.* If you are a music fan, and play drums in any capacity whatsoever, I doubt you'll be disappointed in this set.