Mastodon's performance was fantastic. They just have this pummeling, steamrolling kind of intensity in which the intensity builds through the entire show.
I have to admit, though, that it's kind of exhausting to photograph with AAA (I know, cry me a river). What having all-access to this show was nice for was the luxury of being able to wait out stretches of songs in which the lighting was poor. It's no secret that Mastodon love deep color washes, so this extra time to shoot when the stage wasn't entirely say, green or red or blue, was a nice bonus.