The Collegium Musicum are the Early Music Ensembles at Colby, and perform music from the Medieval, Renaissance, and Baroque periods. The core of the group are the Chamber Singers, an ensemble of about sixteen singers with no more than four on a part. The singers rehearse on Wednesday evenings from 7:00-9:30 p.m. in the acoustically wonderful Lorimer Chapel. String and wind players may join the the Chamber Players, which explore the instrumental music of the 16th and 17th centuries. Rehearsals are arranged to fit student schedules.