If you're a diehard Mastodon fan, you have probably played their absolutely epic Leviathan to death. And why not? It's one of the best metal albums of the past 10 years. But now, you have another reason to listen to it and it's not through some cheap reissue or re-release. Some dude named Sam Abbott played the entire album on piano in a single take. There is little else to say other than you gotta see this to believe it, so free up 38 minutes immediately You can watch the performance below and head to Soundcloud to download/stream just the audio.