 Michael Haydn's Missa tempore Quadragesimae and Missa Sancti Francisci Seraphici are also part of the choir's repertoire, as William Lloyd Webber's "Missa Princeps Pacis" of 1962.Once a year the choir performs a choral concert, since 1997 regularly on 3 October.They sang among others Mozart's Requiem, Schubert's Mass No.