So much music in this film!

I was trying to jot down some of the music in the background and fell far short, especially during the carnival scene. Now, I'm trying to identify the song Rex Ingram is singing, one I've never heard before.

I love the calliope songs:
Oh Susannah
Camptown Races
Over the Waves
Also, there were a couple of waltzes I couldn't immediately identify.

However, I'd like to know the blues number. I wish I had caught enough of the lyrics to try and identify it. Did anyone recognize it?

~~MystMoonstruck~~