Mulet composed the significant part of his output for the symphonic organ. His mélodies and some compositions for orchestra, piano and even harpsichord are forgotten today ("Des Poèmes Symphoniques", "Fantaisie Pastorale", "Petite Suite", "Le Talion"). His output for the organ is expressive in a post-Romantic manner. The "Esquisses byzantines" (1914–19) are his most often played works; They form a group of ten pieces half of them inspired by various parts of the Sacré-Coeur basilica (Titles are: Nef, Vitrail, Rosace, Chapelle des Mortes, Campanile, Procession, Chant funebre, Noel, In Paradisum, Tu es petra). The also popular "Carillon Sortie" was written before 1912 and was dedicated to Joseph Bonnet.
French organist and composer. Choirmaster of the basilica of Sacré-Coeur, Paris. Won first prize for cello in Delsart’s class in 1893 and second prize for organ in 1897. He studied organ with Guilmant (improvisation) and Widor (compsition). Organist in various Paris churches. Professor at the Ecole Niedermeyer and at the Schola Cantorum from 1924 to 1931. In 1937 Mulet burnt his manuscripts and left Paris for Provence. He was cathedral organist in Draguignan until 1958 and died there in 1967. He spent 30 of his 89 years in seclusion. He had no children. He died in a convent.