Song Name: Blockhead ("Industrial" Demo) Artist: DEVO Appears On: Unreleased Year Recorded: 1975/6? Performed Live: Never Run Time: Unknown Writing Credits: Bob Mothersbaugh & Mark Mothersbaugh Sung By: Mark Mothersbaugh Alternate Versions: None * Original demo recorded by Bob 1 and Mark, referred to in the Booji Boy's Basement interview. Featured Bob 1 on guitar, and Mark on vocals and percussion (hitting a metal pole with a chain)