John Martyn (born Iain David McGeachy? on September 11, 1948 in New Malden, Surrey, England) is a British singer-songwriter.
Martyn's parents divorced when he was five and he spent his childhood alternating between England and Scotland.
His professional musical career began when he was 17; a blend of blues and folk resulting in a unique style that made him a key figure in the London folk scene during the mid-1960s. He signed to Chris Blackwell's Island Records in 1967 and released his first album, London Conversation, the following year.
This first album was soon followed by The Tumbler, which was moving towards jazz. By 1970 Martyn had developed a wholly original and idiosyncratic sound: acoustic guitar run through a fuzzbox, phase-shifter, and Echoplex. This sound was first apparent on Stormbringer in 1970, which featured Martyn's then wife, Beverley Kutner, as his collaborator. She also appeared on The Road to Ruin in 1970.