Medium Rarities is a compilation album by American metal band Mastodon.

It was released digitally and on limited edition vinyl on September 11, 2020 via Reprise Records.

The album is a collection of rare tracks that include covers, instrumental versions of previous songs, and live recordings.

[1][2][3] The song features Scott Kelly from Neurosis for his final guest appearance with Mastodon before his withdrawal from the public eye that was not announced until August 2022.

stated the album "certainly underlines the band’s extraordinary ability to shape-shift" and highlighted the song "Fallen Torches" as a "heroic attempt to salvage 2020 via monolithic riffs and an outro thunderous enough to crack planets.