Rainbow (rock band) King", and "Sensitive to Light". Former Widowmaker bassist Bob Daisley was hired to record these tracks, completing the band's next line-up. After the release and extensive world tour in 1977–78, Blackmore decided that he wanted to take the band in a new commercial direction away from the "sword and sorcery" theme. Dio did not agree with this change and left Rainbow. Blackmore asked Ian Gillan, also formerly of Deep Purple, to replace Dio, but Gillan turned him down. After a series of auditions, Graham Bonnet, former singer/guitarist of The Marbles, was recruited. Powell stayed, but Daisley and Stone were both
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