"With it I have given all I could give. What I did, I could not achieve again." And he never did. French composer (and organist) Camille Saint-Saëns said that about his Symphony #3, called the “Organ” ...

Austrian composer Anton Bruckner was devoutly catholic and, despite critics being especially harsh (and petty) toward his early music, had faith that his unique musical voice was a gift from God.