For more than 70 years now, former members of the Vienna Boys' Choir have sung as the Choralschola der Wiener Hofburgkapelle (Schola of the Vienna Hofburg Chapel) at Sunday masses in the Vienna Imperial Chapel. The Gregorian chants are an integral part of the liturgy. Apart from that, the ensemble is frequently invited to perform at masses and concerts in Austria and abroad.
Many of the members of the association Chorus Viennensis / Choralschola der Wiener Hofburgkapelle, which is made up exclusively of former members of the Vienna Boys' Choir, sing in both ensembles.