Bryson Macrae Graham was born to parents Joe Graham and Doreen Graham (née Bywaters), on 12 September 1952. He had an older brother named Raymond.
Bryson Graham commenced his professional recording career, at the age of seventeen as a member of Mainhorse Airline, with David Kubinec, Patrick Moraz, and Jean Ristori (late summer 1969 to 1970). Kubinec left, and guitarist Auguste De Antoni was replaced by Peter Lockett; the band's name being shortened to Mainhorse (1970 to mid-1971) who released one album under this name.[3] He also played with Gary Wright and Wonderwheel, including George Harrison as a special guest member, on The Dick Cavett Show. Graham later played with Alvin Lee[4] and Ten Years After.