As a teenager Reeves learned orchestral double bass and played in local jazz-oriented groups (also sometimes the Wes Minster Five) with Colfes Grammar School, Lewisham schoolmates,[2] Dave Greenslade and Jon Hiseman; Reeves and Hiseman would later record with John Mayall on the album Bare Wires and then go on to form Colosseum.
In late 1964 he suggested for Pye release, and played on, the instrumental UK hit Sounds Orchestral's "Cast Your Fate to the Wind".
He became assistant to Tony Hatch at Pye before leaving to become a freelance producer for CBS and Polydor and creative director of the Greenwich Gramophone Company.
After two albums with Colosseum he left to concentrate on session work and production, working with the Woods Band, Sandy Denny (The North Star Grassman and the Ravens), Paul Kent, John Martyn (Bless the Weather), Day of Phoenix and Burning Red Ivanhoe from Denmark, and Chris DeBurgh.
[4] In 1973 he played on Mike Taylor Remembered, a tribute to the musician, with Neil Ardley, Jon Hiseman, Ian Carr, Barbara Thompson and other major modern British jazz players.