Abel_Decaux

Abel-Marie Alexis Decaux (11 February 1869 – 19 March 1943) was a French organist, composer, and pedagogue, best known for his piano suite Clairs de lune, some of the earliest pieces of dodecaphony.
A student of Théodore Dubois, Jules Massenet, and Charles-Marie Widor, among others, he was the titular organist of the grand organ of the Sacré-Cœur basilica. Decaux was more renowned as a player and professor during his lifetime than a composer.
He is popularly known as the "French Schoenberg".