piano music became forgotten. In a French obituary, he was called "le barde de l'Irlande" and is credited as having saved "l'ancienne mélodie celtique". Hennessy was very critical of the contemporary avant-garde, particularly of Arnold Schoenberg, and wrote numerous sarcastic and pessimistic letters and comments in the musical press. For him, a solution to what he perceived as a crisis was a turn to regional traditions of folk music and to incorporate these into works of art music. From the time Hennessy lived in Paris, his music was largely published by E. Demets and from 1923 by Max Eschig (who had taken over Demets). Other publishers included Augener (London) and Schott (Mainz). Selected works For a full list of compositions, see List of compositions by Swan Hennessy. Dates below are years of publication. Chamber music Lieder an den Mond. Romantische Stücke, Op. 10, for violin, cello, piano (London: Augener & Co., 1888) Sonate en style irlandais, Op. 14, for violin and piano (London: Schott & Co., 1904; as Sonate en Fa (style irlandais): Mainz: B. Schott's Söhne, 1905) Prémier Quatuor (Suite) [String Quartet No. 1], Op. 46 (Paris: E. Demets, 1913) Deuxième Quatuor [String Quartet No. 2], Op. 49 (1920) (Paris: E. Demets, 1920) Rapsodie celtique, Op. 50, for violin and piano (Paris: E. Demets, 1915) Petit trio celtique, Op. 52, for violin, viola, cello (Paris: E. Demets, 1921) Trio, Op. 54, for two clarinets and bassoon (Paris: E. Demets, 1921) Variations sur un thème de six notes, Op. 58, for flute, violin, viola, cello (Paris: Max Eschig & Cie., 1924) Quatre Pièces celtiques, Op. 59, for cor anglais, violin, viola, cello (Paris: Max Eschig & Cie., 1925) Troisième Quatuor à cordes [String Quartet No. 3], Op. 61 (Paris: Max Eschig & Cie., 1926) Sonatine celtique, Op. 62, for viola and piano (Paris: Max Eschig & Cie., 1924) Rapsodie gaélique, Op. 63, for cello and piano (Paris: Max Eschig & Cie., 1925) Deux Morceaux, Op. 68, for alto saxophone and piano (Paris: Max Eschig & Cie., 1926) Trio, Op. 70, for flute, violin, bassoon (Paris: Max Eschig & Cie., 1926) Quatre Morceaux, Op. 71, for alto saxophone or viola (Op. 71bis) and piano (Paris: Éditions Max Eschig, 1929) Quatrième Quatuor à cordes [String Quartet No. 4], Op. 75 (Paris: Éditions Max Eschig, 1930) Deuxième Sonatine, Op. 80, for violin and piano (Paris: Propriété de l'auteur, 1929) Sonatine, Op. 81, for