Curved Air are an English progressive rock group formed in 1970 by musicians from mixed artistic backgrounds, including classical, folk, and electronic sound. The resulting sound of the band is a mixture of progressive rock, folk rock, and fusion with classical elements. Curved Air released eight studio albums, the first three of which broke into the UK Top 20, and had a hit single with "Back Street Luv" (1971) which reached number 4 in the UK Singles Chart. Band history Sisyphus The group evolved out of the band Sisyphus, who played one of their early gigs in the ballroom of Leith Hill Place, Surrey for a masked ball and which was formed by Darryl Way (who studied violin at Dartington College and the Royal College of Music) and Francis Monkman, a member of the Royal Academy of Music. While wandering through an outlet store of the Orange Music Electronic Company, Monkman was intrigued by the sound of Way testing his first electrically amplified violin, and the two "got to talking." They discovered they had a lot in common, and in 1969 invited pianist Nick Simon who, along with bassist Rob Martin and drummer Florian Pilkington-Miksa, completed the line-up of Sisyphus. "Darryl and Nick were very much into Spirit. One could cite them as a formative influence for Curved Air", Monkman later remembered. Many of the early Curved Air songs were written for Sisyphus, among them "Young Mother in Style" and "Screw". Sisyphus was hired to provide accompaniment for Galt MacDermot's new play, Who the Murderer Was, at the Mercury Theatre in Notting Hill Gate, serving as the pit band. Mark Hanau, an aspiring band manager at the time, saw the show and decided he wanted to manage Sisyphus. He felt that Sonja Kristina, an aspiring folk musician who he had seen in the London stage production of Hair, was the missing ingredient in the group. On 1 January 1970, Hanau contacted her through the singer and impresario Roy Guest. She listened to a cassette of the band's music and was impressed. With Kristina's joining and Nick Simon's departure, Sisyphus metamorphosed into Curved Air, named after the album A Rainbow in Curved Air by contemporary composer Terry Riley. The name was suggested by Monkman who, having played in the first London performance of In C, was a great fan of Riley. The band's new sound immediately came together, and the five-piece