Aled Jones introduces music for choir, solo piano, piano duet and orchestra, all from the 32 voices of French chamber choir Accentus. The choir's founder and conductor Laurence Equilbey talks about how she has steered Accentus well beyond the limits of the standard repertoire for unaccompanied chamber choir. With music by Debussy, Mahler, Poulenc, Ravel and Schoenberg, and new works written for Accentus by Philippe Manoury and Bruno Mantovani.