text: 1983's Headhunter was the band's first album awarded with Gold album status in the United States and hit number 25 in the 1983 Billboard 200 album chart. The album was Krokus' most successful album to date, both commercially and critically. It boasted the hit power ballad "Screaming in the Night", which saw heavy rotation on MTV and would become one of the band's most recognizable songs. Judas Priest's Rob Halford contributed backing vocals on the song "Ready to Burn". Bassist/keyboardist/percussionist Chris von Rohr was fired in late 1983 due to his writing an article published in a main Swiss newspaper exposing the band's rock'n'roll habits, prior to the band's appearance at the RockPop Festival in Dortmund, Germany, with rhythm guitarist Mark Kohler switching over to bass and Patrick Mason, aka Patrick Mahassen, who had also played in the Swiss band Crown, taking over rhythm guitar duties for the remainder of the Headhunter tour; however, Mahassen exited the band prior to the recording of the next album, The Blitz, another Gold certified album, which the band completed as a four-piece.  The tour for this album featured Mark Kohler returning to his main instrument, with Andy Tanas, formerly of Black Oak Arkansas, joining on the bass.  These shows also featured Loverboy's Doug Johnson on keyboards. Meanwhile, von Rohr would go on to produce the band Headhunter's eponymous 1985 album, featuring future Krokus members Peter Tanner and Many Maurer, and release a solo album in 1987, entitled Hammer & Tongue (re-issued in 1993 as The Good, The Bad and The Dog after the release of von Rohr's autobiography, "Hunde wollt ihr ewig rocken"), which featured contributions from his former Krokus bandmates, Marc Storace and Fernando von Arb.