David Coverdale to replace Ian Gillan. Coverdale had fronted a local group called The Government, which had played with Deep Purple on the same bill in 1969, so he and the band were familiar with one another, and after sending a tape and later auditioning, Coverdale was admitted into the band, with bassist Glenn Hughes adding his own vocals as well. In February 1974, Deep Purple released their first album with Coverdale and Hughes titled "Burn" which was certified Gold in the US on 20 March 1974 and in the UK on 1 July. In April 1974, Coverdale and Deep Purple performed
Ian Gillan appeared on the band's next two albums, "Double Trouble" and "Magic". In 1982, Ian Gillan announced the band would fold, as he needed to rest his damaged vocal cords. The rest of the band Gillan, particularly McCoy and Towns, were not happy at the sudden disbanding of the group so soon after the success of "Magic", and sued Gillan for royalties. In 1983, manager Don Arden invited Gillan to join Tony Iommi, Geezer Butler and Bill Ward, all founding members of Black Sabbath, to form a supergroup. Although the band had reservations, on 6 April 1983, it was formally announced