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 Whitesnake's "Greatest Hits" album. The band again broke up after the tour. After this Coverdale once again retreated from the music business, for three years. In 1997 Coverdale returned and released "Restless Heart" (with Vandenberg on guitar). The album was originally supposed to be Coverdale's solo album, but the record company forced it to be released under the moniker "David Coverdale & Whitesnake". The tour was billed as Whitesnake's farewell tour, during which Coverdale and Vandenberg played two unplugged shows, one in Japan and the other for VH1. The first of the two shows was released the next year under