Originally from Somerset, Brynly won the Associated Board Gold Medal for Grade 8 bassoon, and gained his ARCM diploma at the age of 16. He was principal bassoonist of the National Youth Orchestra for four years, performed the Mozart Bassoon Concerto with them, and was awarded the Bulgin Medal of the Worshipful Company of Musicians.

While at Cambridge, he conducted the University Orchestras and University Chamber Orchestra, and played the bassoon professionally with the London Sinfonietta. In 1985 he founded and conducted the Fulham Philharmonia, which rapidly became the best full-size amateur orchestra in London.

Since returning to the UK, Brynly has served as conductor of the Bexley Choir, Kent, is currently Music Advisor to the Lydian Orchestra (a youth orchestra based in Sevenoaks, Kent) and has guest conducted several other orchestras around the South-East. He is also a sought-after tenor, performing in and around his home town of Sevenoaks, where he lives with his wife Penny.

Bryn has been conducting Bacchus since 2004.