Chamber music courses are open to all instrumentalists enrolled in the early music department. The repertoire studied includes music from the late Renaissance, Baroque, Classical and Romantic periods, played on historic instruments. Singers enrolled on the vocal baroque course mingle with instrumentalists, enriching the repertoire taught. Each performer plays in several groups over the course of a year, changing partners and repertoire at each session. There are two public examinations during the year, giving each ensemble the opportunity to showcase their work and progress. As a foundation for every musician, chamber music provides the opportunity to learn and express themselves musically and verbally.

For several centuries, the "serpent" accompanied plainsong in French churches, before joining the symphony orchestra in the 18th century (Mendelssohn, Verdi, Wagner, Berlioz, Gossec etc....). Its repertoire is vast, ranging from religious music (from the 17th to the 19th century) to secular music. It is the ancestor of the tuba. Its rediscovery is enabling tuba and saxhorn players to discover early music and create new opportunities for themselves in the professional world.