7CD - Keef Hartley Band - Sinnin’ For You – The Albums 1969-19737 CD Set UK Import Keef Hartley first came to prominence as a member of the British R&B group The Artwoods before joining John Mayalls Bluesbreakers in 1967 before leaving to form the first line up of his own band. With Miller Anderson (guitar, vocals), Gary Thain (bass), Peter Dines (keyboards), Spit James (guitar) and a horn section that was a whos who of British jazz (Henry Lowther, Chris Mercer, Lyn Dobson and Harry Beckett), Hartley recorded his