I took a break from my Mastodon binge for a week or so, but I'm back at it again. Crack the Skye is dominating my player, along with Leviathan, The Hunter and Emperor of Sand. I've listened to the new album in full a few times and it's growing on me, but I like the heavier songs from it. The entire thing is just way too dense to take in and doesn't have the immediacy as some of their other albums.
Blood and Thunder from Leviathan is definitely my favorite song of theirs.