From two players to twelve: few ensembles could respond with equal authority to the very varied demands made by this wonderful collection of Debussy's chamber music. But then, few ensembles can stand comparison with the Nash Ensemble, whose members continue to set the standards across a dauntingly wide repertoire. A realization of the Prélude à l'après-midi... for chamber ensemble adds to this album's more familiar attractions of the string quartet and three sonatas.