It sounds more like jazz/ragtime to my ears, at least. But this recording was before Hart Wand added lyrics to his song:
And suddenly, unmistakeably, it's the blues.
- There's a place I know, folks won't pass me by,
- Dallas, Texas, that's the town, I cry, oh hear me cry.
- And I'm going back, going back to stay there 'til I die, until I die.