Encouraged by Camille Saint-Saëns, violist/composer Henri Casadesus founded the Société des Instruments Anciens in 1901. Casadesus played viola d'amore, his brother Marius played quinton, and additional Casadesus family members and friends played viols, keyboards, and plucked strings. Unlike other early period-instrument revivals, the Casadesus ensemble performed not only baroque pastiche, but also new works which they commissioned and composed for their rediscovered instruments. This disc presents the premiere recordings of music written in the first decades of the twentieth century by Henri Casadesus and Ottorino Respighi for a "quartet of viols."