François-Clément Théodore Dubois (24 August 1837 – 11 June 1924) was born in Rosnay in Marne. He studied first under Louis Fanart (the choirmaster at Reims Cathedral) and later at the Paris Conservatoire under Ambroise Thomas. He won the Prix de Rome in 1861. In 1868, he became choirmaster at the Church of the Madeleine, and in 1871 took over from César Franck as choirmaster at the Basilica of Sainte-Clotilde. In 1877, Dubois returned to the Church of the Madeleine, succeeding Camille Saint-Saëns as organist there. From 1871 he taught at the Paris Conservatoire, where his pupils included Pierre de Bréville, Guillaume Couture, Gabrielle Ferrari, Gustave Doret, Paul Dukas, Achille Fortier, Xavier Leroux, Albéric Magnard, Édouard Risler, Guy Ropartz, Spyridon Samaras, and Florent Schmitt.)
Although he wrote many religious works, Dubois had considerable hopes for a successful career on the operatic stage. His fascination with Near-Eastern subjects lead to the composition to his first staged work, La guzla de l'émir. His music also includes ballets, oratorios and three symphonies. His best known work is the oratorio Les sept paroles du Christ ("The Seven Last Words of Christ" ); his Toccata in G (1889), for the organ, is a recital staple, by no means solely in France. The rest of his large output has almost entirely disappeared from view, but he has had a more lasting influence in teaching, with his theoretical works, still being sometimes used today.
"Sortie (Grand Chœur)" is found in "10 Pièces pour grand orgue", first published in 1921, and dedicated to George Jacob.
Jacob was organist of the Church of Saint-Ferdinand-des-Ternes at the time this pieces was composed.
I think you'll find this sounds "similar" to Dubois' more famous "Toccata in G". :-)
The score is attached below, as well as several photos of Dubois, one of George Jacob, and a period photo of the Boulevard de la Madeleine.
I wish all listeners a peaceful and happy Easter!