3 Morceaux, Op.1 is a set of three pieces for solo harmonium composed in 1852 by Camille Saint-Saëns and first published in 1858. The first piece, 'Méditation' is in the key of C major, and dedicated to Madame Eugéne Deviverto. The second one is a Barcarolle in F sharp minor, dedicated to Mademoiselle Berthe de Tinan. The third piece, in the key of D major, is titled 'Prière', and bears a dedication to Madame Astrée Devivier.
