St. Peter's has long been known for its high-quality music program, which is a central part of the liturgical and social life of the parish.

We strive to involve and educate members of all ages, to include a variety of music growing out of the Anglican tradition, and to inspire members of the congregation and the community through our worship and extra-liturgical musical events. St. Peter's is blessed with historic and exceptional musical instruments: a 1930 E. M. Skinner pipe organ with four-manuals and over 4,000 pipes and a 1924 carillon of 49 bells.

We have at present six choirs, inclulding one of the few choirs of men and boys in the country.  There is also a girl's choir, a choir of men and women, an early-music schola, and a choir that sings a variety of styles of American music.  In addition, in 2007, Director of Music & Organist Brian Harlow started a training choir for children in 1st through 3rd grades.

Music for worship is offered in the hope that it will help people deepen their experience and knowledge of God. The repertoire spans five centuries, and many languages and musical forms. Liturgy is always the "work of the people," whether it take the musical form of a congregational hymn or chant, a choral mass setting, or a festive anthem.  St. Peter's offers two choral Eucharists each Sunday during the academic year; Choral Evensong on the first Sunday of every month; Advent and Christmas services Lessons & Carols; and sung Eucharists on Epiphany and Ash Wednesday, as well as a full Holy Week schedule.

St. Peter's also offers a series of concerts throughout the year, including choral and orchestral offerings, frequent organ recitals, and sometimes even jazz.