In July 1978, the band (now known simply as Whitesnake) entered Central Recorders in London to begin work on their first proper studio album with Martin Birch again producing. The recording and mixing only took ten days. Towards the end of the sessions, Pete Solley's keyboard parts were completely replaced by Coverdale's former Deep Purple bandmate Jon Lord, who agreed to join Whitesnake after much coaxing from Coverdale. Colin Towns and Tony Ashton were also approached, having previously played with fellow Deep Purple offshoots the Ian Gillan Band and Paice Ashton Lord, respectively. Whitesnake's debut album "Trouble" was released in October 1978, and it reached number 50 on the UK Albums Chart. In a retrospective review for AllMusic, Eduardo Rivadavia stated: "A few unexpected oddities throw the album off-balance here and there, [...] but all things considered, it is easy to understand why "Trouble" turned out to be the first step in a long, and very successful career." The release of "Trouble" was followed by an 18-date UK tour, beginning on 26 October 1978. The final show at the Hammersmith Odeon in London was recorded and released in Japan as "Live at Hammersmith". According to Coverdale, this was done to appease Japanese promoters who allegedly refused to book Whitesnake without some kind of a live recording.