Remember the Nitty Gritty Dirt Band album "Uncle Charlie and His Dog Teddy." Great album and it includes a recording that one of the Grittys made of his uncle (Charlie)coaxing his dog (Teddy) to sing "The Old Rugged Cross." The dog howls along with a bit of harmonica playing. It doesn;t exactly sound like "The Old Rugged Cross" but it is songlike. Then it segues into "Mr. Bojangles," sans uncle, sans dog.