Founded in January 2017, the Sanctus Voices are based at the Holy Trinity Garrison Church in Windsor, Berkshire. This professional choir originally performed as part of the church's Sanctus services, a series of multi-sensory eucharistic services. These services were envisioned to be an immersive experience that included atmospheric music from the fifteenth century to the present day.


Sanctus Voices now sings roughly once a month on a Sunday morning at the church for a Celtic-based Eucharistic services.