1) Tennessee Stud 2) Intoxicated Rat 3) Rise When the Rooster Crows 4) St. James Infirmary
The way he used sound effects on the first two certainly made those arrangements unique.
I love his harmonica on Rise When the Rooster Crows. There's something about the simplicity and beauty of the song the way Doc did it.
I'm not sure but I think Doc may have changed St. James Infirmary to Am. He used a "cheater" on the third fret as I remember. Just a great arrangement.