Written, arranged, and performed by Reznor, Nine Inch Nails' first album Pretty Hate Machine debuted in 1989. It marked his first collaboration with Adrian Sherwood (who produced the lead single "Down in It" in London without meeting Reznor face-to-face) and Mark "Flood" Ellis. :42 Reznor asked Sean Beavan to mix the demos of Pretty Hate Machine, which had received multiple offers for record deals. He mixed sound during Nine Inch Nails' live concerts for several years, eventually becoming an unofficial member of the live band and singing live backup vocals from his place at the mixing console. Flood's production would appear on each major Nine Inch Nails release until 1994, and Sherwood has made remixes for the band as recently as 2000. Reznor and his co-producers expanded upon the Right Track Studio demos by adding singles "Head Like a Hole" and "Sin". Rolling Stone's Michael Azerrad described the album as "industrial-strength noise over a pop framework" and "harrowing but catchy music"; Reznor proclaimed this combination "a sincere statement" of "what was in [his] head at the time". In fact, the song "Down in It" spent over two months on Billboard's club-play dance chart. After spending 113 weeks on the Billboard 200, Pretty Hate Machine became one of the first independently released records to attain platinum certification.