Supertramp were a British rock band formed in London in 1970. Marked by the individual songwriting of founders Roger Hodgson and Rick Davies, the group were distinguished for blending progressive rock and pop styles. The classic lineup, which lasted ten years from 1973 to 1983, consisted of Davies, Hodgson, Dougie Thomson (bass), Bob Siebenberg (drums) and John Helliwell (saxophone), after which the group's lineup changed numerous times, with Davies being the only constant member throughout its history.