David Coverdale recording "Slide It In" to re-form Deep Purple. (Ian Paice had left Whitesnake in 1982.) In 1985, Sykes and Coverdale started working on new songs for the next album, but Coverdale soon contracted a serious sinus infection that made recording close to impossible for much of 1986 and which had doctors thinking he might never sing again. Coverdale eventually recovered, and recordings were continued. But before their upcoming album was fully recorded and released, Coverdale had dismissed Sykes from the band. The split with Sykes was, reportedly, not amicable. In many period interviews, Coverdale stated that the next album was
David Coverdale part, the problem had been the comparison to Robert Plant who had fronted Led Zeppelin, as vocalist, with Jimmy Page. Some of their audience criticised Coverdale, feeling he was merely a Plant clone; Plant himself referred to the team-up as ‘David Cover-version’. Others felt the short-lived collaboration only served to inspire Page to once again hook up with Plant, a year later. In 1994 Coverdale assembled a new line-up of Whitesnake (with the exception of Coverdale's musical partner, guitarist Adrian Vandenberg and bassist Rudy Sarzo, both of whom had been in Whitesnake since 1987) to tour for the release of