Ian Gillan band, who had not had any holiday since their initial rehearsals at Hanwell. He started drinking, and relationships between him and the rest of the band became strained, particularly with Blackmore. On 6 November 1971, he collapsed with hepatitis while waiting to board a plane in Chicago, cancelling the remainder of a US tour. By December 1972, having recorded "Machine Head", "Made in Japan" and the yet to be released "Who Do We Think We Are" with Deep Purple, Gillan finally decided the workload had driven him to exhaustion. Unlike some band members, he was unhappy about "Made in Japan",
John Lawton (musician) Roger Glover's "Butterfly Ball" live at the Royal Albert Hall in 1975, featuring David Coverdale, Glenn Hughes, Ian Gillan and Twiggy. He sang on Eddie Hardin's "Wizard's Convention II" with Chris Farlowe, Denny Laine, Paul Jones and Tony Ashton. Lawton worked with some of the finest record producers, including Tony Clarke (Moody Blues), Jimmy Miller (Rolling Stones), and Harold Faltermeyer (Pet Shop Boys), who produced the titles Lawton sang on the Lenny McDowell Project "Lost Paradise". Lawton sang with German rock band Rebel, later known as Zar, on three albums, during the late '80s -'90s including their hit singles "Line