Membership is open to those who have served as choral musicians in St. Albans Cathedral at one time or another; this means not only the Cathedral Treble Choristers and Abbey Girl Choristers but also the Lay Clerks.

The Association is also empowered to invite former Masters of the Music, Assistant Organists, Precentors and those who, in the past, have given exemplary service to the Cathedral and Abbey Choirs, to become Honorary Members.

Details of membership can be found in the Constitution of the Association.