Gabriel currently teaches at DePauw University, Indiana, in the United States. From 1996 until 2004, he occupied the second Baritone position in The King's Singers, the post formerly held by Simon Carrington. In those eight years, he made a dozen recordings on the BMG label (including a grammy nomination), and gave more than 900 performances in almost every major concert venue in the world. Special collaborative projects saw him working and performing with some of the world's most respected artists, including percussionist Evelyn Glennie, pianists Emmanuel Ax and George Shearing, singer Barbara Hendricks and 'Beach Boy' Bruce Johnston.

In 2002 he planned and coordinated, in partnership with the Poet Laureate, Andrew Motion, a special Jubilee concert in the Royal Albert Hall featuring seven newly commissioned works by Britain's leading composers and poets, all performed by the King's Singers and televised by the BBC.

During this time he developed a passion for choral coaching and the nurturing of student choirs, and since leaving the King's Singers he has thrown himself into educational work alongside his continuing singing career. He has given workshops in the USA both independently and with the King's Singers, notably at ACDA, SPEBSQSA, Amerifest and MENC conventions, with the Harlem Boys Choir and at a special festival of 10 high school choirs in Dallas. This year he served as guest conductor and vocal coach at the Feliciana International Choral Festival and prepared four New Jersey high school ensembles for performances in front of former President Clinton. Across the Atlantic, Gabriel has given a 4-day series of workshops to choirs from across Europe at the Schleswig Holstein Festival in northern Germany (2001 and 2003), has been part of the Ensemble in Residence at London's Royal College of Music, and he now regularly coaches around a dozen young professional groups across the European continent. His achievements in the choral world have led to many invitations to adjudicate choral competitions, notably the mixed choir final of 'Sainsbury's Choir of the Year' (televised by the BBC), and in 2004, he adjudicated every round of the "Vereins und Westbank Jugend Kulturell A Cappella" competition in Germany.

Still only 34 years of age, Gabriel is nevertheless a veteran of the professional music world. His career began when he was barely eight years old, in the choir of Westminster Abbey, where he served as Head Chorister and performed a solo at the wedding of HRH Prince Andrew and Miss Sarah Ferguson. After taking up a choral scholarship at Trinity College, Cambridge, (under Dr Richard Marlow) he co-founded and directed a male voice ensemble, Henry's Eight, with whom he undertook a series of tours and recordings (for Hyperion) of music of the Flemish Renaissance.

His work as a singer, coach and musical director recently led to his name appearing in the London Times' list of 'Great British Hopes'.

With the King's Singers: