Tristan is the organist of St Mary the Virgin, Merton Park, having previously been organist at St Luke’s, Woodside, and was Organ Scholar at Trinity College, Oxford, between 2018-2021, and Frideswide Organ Scholar at Christ Church Cathedral, Oxford, between 2019-2021.

He has also held other accompanist roles, including playing for Hertford Chamber Choir at rehearsals and concerts, including at the Hertfordshire Festival of Music. He was also principal accompanist for the Oxford University Gilbert and Sullivan Society towards performances of Iolanthe and Pirates of Penzance whilst he was Musical Director.