Occult Hymn is the only EP by Danger Doom, released in 2006 as the follow-up to their debut album, The Mouse and the Mask.[4] It contains seven tracks and was released as a free download on Adult Swim's website on May 30, 2006. Its name is a reference to a line in Danger Doom's song "A.T.H.F.", and intentionally rhymes with "Adult Swim." The original EP contains 2 new tracks, 3 remixes, and 2 skits; on the re-release, 2 more new tracks were added.