With music composed by Pierre Villette O Salutaris Op.21 is a an Eucharistic hyhmn written for the Feast of the Corpus Christi for SATB choral a cappella. Dedicated to Jules Lambert director of 'La cantate' in Rouen this religious piece is very lyrical and melodious. Written in Latin this piece necessitates being sung at a slow tempo (58) including three principal verses and finishing with the voices in harmony. It is mainly used for the Adoration and the Blessed sacrament. Pierre Villette (1926-1998) was a French composer of choral and instrumental music. Strongly influenced by Catholicism his musicalheritage ran from Fauré to Messiaen.