Louis James Alfred Lefébure-Wély

Louis-James Alfred Lefébure-Wély was a French organist and composer. He played a major role in the development of the French symphonic organ style and was closely associated with the organ builder Aristide Cavaillé-Coll, inaugurating many new Cavaillé-Coll organs.

Adapted from the Wikipedia article on Alfred Lefébure-Wély.