Although Louis Armstrong is most famous for his inventiveness and influence as a player and singer, the song that has come to be most associated with him in New Orleans is “What a Wonderful World.” Armstrong recorded it in the last years of his life when he suffered from terrible infirmities that limited his ability to play and sing. What he had left when he recorded “What a Wonderful World” was his overarching spirit, an almost superhuman ability to evoke the deepest emotional response with ...