The Harvard–Radcliffe Collegium Musicum is a mixed chorus at Harvard University, composed of roughly 50 voices from undergraduate and graduate student populations. Founded in 1971 to coincide with the coeducational merger of Harvard and Radcliffe College, Collegium drew from members of the Harvard Glee Club and the Radcliffe Choral Society to form a smaller mixed group that could represent Harvard on tours. Although Collegium used to perform primarily early Renaissance music, its repertoire now draws from centuries of a cappella and orchestral selections. Together with the (tenor-bass) Harvard Glee Club and the (soprano-alto) Radcliffe Choral Society, it is a member of the Harvard Choruses.