Cullum became an assistant at
George Martin's AIR Studios, where he worked on recordings by
Roxy Music and others. In the 1980s, after touring the world mixing live shows, he formed a production collaboration with
Chris Hughes. Together they worked with
Adam and the Ants,
Wang Chung,
Ric Ocasek and others. Hughes and Cullum used high-tech production techniques on the
Paul McCartney song "Motor of Love", according to Mike Evans, giving it a synth sound, with a "lush backing of electronic effects". He worked with Enya and
Nicky Ryan on the album
Watermark. James E. Perone notes that Enya's vocals are bathed in reverb leading to a "hazy and impressionistic" sound. Cullum is mentioned by his first name in the lyrics of "
Orinoco Flow". The
Moya Brennan Grammy-nominated album
Two Horizons, which Cullum produced and co-composed, was described by Greg Quill as "an ethereal and juiced-up orchestral concept album" Other artists he has worked with include
Tori Amos,
Miguel Bosé,
Howard Jones,
the Human League, the Afro Celt Sound System, Chris Hughes (
Shift - a tribute to
Steve Reich),
Robert Plant,
Perry Blake,
Mary-Jess Leaverland,
Jana Kirschner,
Rufus Wainwright,
Zucchero, and
Phildel. == Selected discography ==