Earthworm finds the band further integrating their love of late '70s and early '80s rock with the kraut-influenced psych that has become their trademark. The songs are heavy and dense with guitar riffs that shred, backed by the intense and hypnotic rhythm section of bassist Jussi Lehtisalo and drummer Tomi Leppanen. The band has invited Bruce Duff (singer of the legendary LA band Jesters of Destiny) to contribute vocals on three tracks.