Chœur de Chambre Accentus (Accentus Chamber Choir; = ACC) was founded in 1991 by the French chorus master Laurence Equilbey. The 32-member Accentus Chamber Choir is dedicated to interpreting the rich modern and traditional a capella choral music repertoire. As a small group, ACC works regularly with the Limoges Baroque Ensemble.
Accentus has performed at the prestigious festivals of Aix-en-Provence, La Roque d'Anthéron, Schleswig-Holstein, and Bach Tage Berlin. Accentus also frequently performs under Swedish guest conductor Eric Ericson, and frequently works with l'Ensemble Intercontemporain, l'Orchestre de Paris et le Théâtre du Châtelet, under conductors Pierre Boulez, Christoph Eschenbach, David Robertson, and Jonathan Nott.
The group has a growing discography which was inaugurated with a 1994 recording of choral works by Francis Poulenc and Ravel, winner of the Prix de l'Académie du Disque Lyrique and the "Must" de Compact. Accentus was also nominated at the 1996 Victoires de la Musique for their recording of songs and ballads by Johannes Brahms and Robert Schumann. In 1995, Accentus received the Liliane Bettencourt Prize from the Académie des Beaux-Arts. The Accentus recording of sacred works F. Poulenc was awarded the "ffff" by Télérama magazine, a "10 de Répertoire", a "Diapason d'Or", the Choc du Monde de la Musique, as well as the Prix de la Nouvelle Académie du Disque. Their recording of Psalms and Motets by Felix Mendelssohn also won a Choc du Monde de la Musique. Accentus was named Musical Personality of the Year for 1997-1998 by the Syndicat Professionnel de la critique dramatique et musicale.
Accentus is associated with the Léonard de Vinci Company / Opéra de Rouen. It receives financial support from France Télécom, the French Ministère de la Culture, la Ville de Paris, Musique Nouvelle en Liberté and the AFAA for foreign tours.
Accentus was thrilled to make its USA debut with an 11 city tour in November 2000.