1982 was a watershed year for electro. Bronx based producer Afrika Bambaataa released the seminal track "Planet Rock", which contained elements of Kraftwerk's "Trans-Europe Express" (from the album of the same name) and "Numbers" (from Kraftwerk's 1981 "Computer World" album) combined with the use of distinctive TR-808 beats. "Planet Rock" is widely regarded as a turning point in the electro genre, "like a light being switched on." Another groundbreaking record released that year, Nunk by Warp 9 utilized "imagery drawn from computer games and hip hop slanguage." Although remaining unreleased, a pre-Def Jam Russell Simmons produced Bruce Haack's proto hip-hop single "Party Machine" at a studio in Philadelphia. Electro hip hop releases in 1982 include songs by: Planet Patrol, Warp 9, Man Parrish, George Clinton ("Computer Games"), Grandmaster Flash and the Furious Five, Tyrone Brunson, The Jonzun Crew and Whodini.