This album is a mass of different tunings. No idea why, I guess it was just, "Hey, that's a great riff, try it down/up here..."

Not only that, Pantera have a tendency, like Megadeth, to use Chromaticism (all part of their bluesy, Texas vibe) and as a result a lot of their stuff, especially on this record, is very hard to pin down to a "key".

With this in mind, you're going to see a lot of interesting and spicy key signatures in here (and some places where there isn't one where you'd expect to see one!).

This has been done to try and make the tabs as easy to read and as clean as possible and it's meant using key signatures that correspond to Modes which might be a bit confusing but simply ignore them and play the notes where they're marked in the tab and you'll be fine 👍🏽