Mastodon will be celebrating Record Store Day (April 21st) by releasing covers of tracks by both Feist and The Flaming Lips, check out an alleged preview of their take on 'A Spoonful Weighs a Ton.'

Mastodon will appear on two different record store day releases, both of them being split vinyls. The first will have the Georgia metal band covering a song by Canadian indie-rock vocalist Feist, while the other side contains her returning the favor. The same setup is true of the second split vinyl, where Mastodon will trade 'Black Tongue' to The Flaming Lips in exchange for 'Spoonful Weighs a Ton.'

A Flaming Lips YouTube channel recently posted a brief preview of what is identified in the clip as Mastodon's take on 'Spoonful Weighs a Ton.' There is a brief echo of vocals at the top of the video which do sound legitimate but there is not enough to authenticate the sample -- guess we'll find out in April.

Preview of Mastodon 'Spoonful Weighs a Ton'