John Graham is a British record producer, songwriter and vocalist who records under several aliases, most notably Quivver, but also Skanna, Stoneproof and Space Manoeuvres. Originally based in the UK and now based in Los Angeles, he began producing in the early 1990s and was a founding member of Tilt, whose track 'Invisible' reached the UK top 20. As Space Manoeuvres he released 'Stage One' on Hooj Choons, which became a widely recognised progressive house track, and his work has appeared on Bedrock, Toolroom, Yoshitoshi, Hooj Choons and his own label Boz Boz Recordings. Graham has also co-written with Sasha, Hybrid and Planet Funk, and produced music for video game trailers including Call of Duty and Batman: Arkham City. He played The Prog Lab's Album Tour Launch Party at Basement 45, Bristol, on 6th July 2018.