Growing up in Australia, Tim Secomb had lessons on the piano and the violin. Then, while studying mathematics and pursuing a scientific career, he played violin in a number of university orchestras in Melbourne, Cambridge (UK) and New York. In 1981, he moved to Tucson and joined SASO. He started playing the viola at that time.
Over the years, he has played as principal viola and as principal second violin in SASO, as well as serving the organization as treasurer, president, vice-president and personnel manager at various times. Along with his orchestral playing, he is also an enthusiastic chamber-music player.