Curved Air

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 Top 20 in the UK Albums Chart, and had a hit single with "Back Street Luv" (1971) which reached number 4 in the UK Singles Chart.

Biography summary from English Wikipedia, photograph via Wikimedia Commons.