There's a bit of an oddity (to my ear) in the chorus of that song - it seems to last one extra 4 bar section than what I'm expecting. I count 20 bars, anyone else?

I think that's part of what makes the song interesting compared to a typical 16 bar chorus - the tension that results from expecting the chorus to end and then it doesn't end.

I like Junior Brown's writing style - some lyrical twists and turns there and smile-inducing electric and lap steel playing.