The Collegium Musicum performs familiar repertoire including oratorios, masses, requiems and other sacred works, and secular works appropriate to a large choir. Repertoire has included Handel's Messiah, Haydn's Nelson Mass, Mozart's Requiem, and Orff's Carmina Burana. The choir also presents less familiar works but by important composers, to introduce both the singers and the audience to another side of choral music, including Tippett's Crown of the Year, Part's Berliner messe and Respighi's Lauda per la Nativita del Signore. 

The choir has a wonderful social aspect as well as focusing strongly on musical performance. It is a significant part of the cultural fabric of UNSW, bringing local and international students from across the entire university with staff and members of the local community to collaborate in public performance.

Members of Collegium Musicum Choir are eligible for the Willgoss Choral Prize each year.