Once described as the French Mendelssohn, Camille Saint-Saëns was talented and precocious as a child, with interests by no means confined to music. He made an early impression as a pianist. Following established French tradition, he was for nearly 20 years organist at the Madeleine in Paris and taught briefly at the École Niedermeyer, where he befriended his pupil Gabriel Fauré. He was a co-founder of the important Société Nationale de Musique with the patriotic aim of promoting contemporary French music in the aftermath of the Franco-Prussian war of 1870-01, in which he had served in the Garde Nationale de la Seine. Prolific and versatile as a composer, he contributed to most genres of music, but by the time of his death in 1921 his popularity in France had diminished considerably, as fashions in music had changed.