Music is central to worship at St. Peter and St. Simon and is rooted in the rich liturgical tradition of the Anglican Church. The Adult Choir enjoys a repertoire from medieval chant to 21st-century anthems, motets and spirituals. With approximately 25 voices including a professional core, many of its members have had extensive choral training or as instrumentalists and solo singers. The choir provides musical leadership at the Sunday 10:30am weekly worship service including full mass settings and seasonal evensong services. Carol Services are presented for Advent and Christmas. Annual concerts feature major works, with soloists and instrumental ensemble accompaniment.
In August of 2019 the choir travelled to the UK to sing for one week residencies at both Gloucester and Chichester Cathedrals.