In a varied musical career bassist Geoff Gascoyne has worked extensively in both the jazz and pop fields. Many of the artists he has worked with have had something of a foot in both camps, most notably Jamie Cullum for whom Gascoyne has been bassist and musical director since 2003. Other people with whom he has appeared include Jim Mullen, Ian Shaw, Claire Martin, Ed Jones, Norma Winstone, Van Morrison, Bill Bruford, Cedar Walton, Dianne Reeves, Ben Sidran and Lisa Stansfield.