Bob Wills recorded this song at his first session for Brunswick's Vocalion label. For some reason, two years later he recorded it again. The first features the horns, while the second one features fiddles and steel. I believe on the first version Leon is playing a guitar on his lap with a steel bar. Compare his two solos, and you'll see what I mean.
I never met him, but I talked with Leon late in his life about 1985. He owned a radio station, so I just called him on the phone. Nice man.