[caption id="attachment_34703" align="alignnone" width="640" caption="Feist in London, October 2011. Photo: Getty Images. Mastodon photo courtesy of Warner Bros"][/caption]
One of the odder Record Store Day releases this year is Feistodon, a split 7" that features the coffee-shop friendly Feist covering Mastodon's "Black Tongue," and the hard rockin' Mastodon covering Feist's "A Commotion." Preview the two tracks in full below and you'll hear Feist bring out the devil inside her (which means using a few guitar effects), while Mastodon pretty much sound as dark and thrashy as ever.