Gwyn was the Musical Director of the Queensland University Symphony Orchestra for a period of 25 years as a Senior Lecturer in the School of Music at UQ. Recently the principal cellist of the Canberra Symphony, and guest Associate Principal cello with the Queensland Symphony Orchestra, Gwyn also performs in a variety of solo and chamber music concerts in Australia. His early cello and chamber music studies were with Sela Trau, Jan Sedivka and Christopher Bunting. He is active as a teacher, examiner and adjudicator, and co-directs the Young Conservatorium Symphony Orchestra in Brisbane. Current projects include researching early cello history in Australia, developing his keen interest in photography, and recording an educational CD of cello repertoire together with pianist Jenni Flemming.