Occult Hymn is a follow-up EP to Danger Doom's debut album The Mouse & The Mask.[4] It contains seven tracks and was released as a free download at 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 EP contains 2 new tracks, 3 remixes, and 2 skits.