Roger Glover riff to 'Maybe I'm a Leo' after hearing John Lennon's 'How Do You Sleep?'." Glover contributed bass on Jon Lord's first solo album, 'Gemini Suite' [1971), and was the featured soloist in the bass movement. Glover departed Deep Purple, along with Gillan, after the band's second tour of Japan in the summer of 1973. Throughout the 1970s Glover produced albums and/or singles by such acts as Judas Priest, Nazareth, Elf, Status Quo, the Ian Gillan Band and David Coverdale. In 1974 Glover released his first solo album, "The Butterfly Ball and the Grasshopper's Feast", which generated the single "Love Is
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