Marie-Joseph-Alexandre Déodat de Séverac (pronounced ; 20 July 1872 – 24 March 1921) was a French composerSéverac is noted for his vocal and choral music, which includes settings of verse in Occitan (the historic language of Languedoc) and Catalan (the historic language of Roussillon) as well as French poems by Verlaine and Baudelaire. His compositions for solo piano have also won critical acclaim, and many of them were titled as pictorial evocations and published in the collections Chant de la terre, En Languedoc, and En vacances.A popular example of his work is The Old Musical Box ("Où l'on entend une vieille boîte à musique", from En vacances). His masterpiece, however, is the suite Cerdaña (written 1904–1911), filled with the local color of Languedoc. His motet Tantum ergo is also still in current use in church settings.