This is the best known of Rossini's Péchés de vieillesse or 'Sins of Old Age'. Although a sacred work, the mass is characteristically lyrical and effervescent, and it affirms the composer's optimistic and deeply felt faith. The work was premiered in 1864. Although Rossini also produced an orchestrated version of the work in 1867, it is reported that he preferred the original scoring, and indeed much of the work's appeal lies in the idiomatic keyboard parts. This edition is based on the autograph manuscript of this original 1864 version, and every effort has been made to honour Rossini's intentions and produce a performing score that is authentic, accurate, and practical.