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",
David Coverdale to over 200,000 fans on his first trip to the United States at California Jam. In December 1974 "Burn" was followed-up by "Stormbringer", which also ranked at Gold album status in the US and the UK. The funk and soul influences of the previous record were even more prominent here, and this was one of the reasons why guitarist Ritchie Blackmore left the band in June 1975. Rather than disbanding, Coverdale was instrumental in persuading the band to continue with American guitarist Tommy Bolin (of Billy Cobham and The James Gang fame). As Jon Lord put it, "David Coverdale came