 During some services, Widor and Fauré improvised simultaneously at the church's two organs, trying to catch each other out with sudden changes of key.Fauré regularly attended Saint-Saëns's musical salons and those of Pauline Viardot, to whom Saint-Saëns introduced him.Fauré was a founding member of the Société Nationale de Musique, formed in February 1871 under the joint chairmanship of Romain Bussine and Saint-Saëns, to promote new French music.