Thank you Rusty for your comment. The melody line of this song and how the lyrics are phrased is very common. There are four songs that I know of that use the same melody. This song, You Got to Move (most are familiar with Fred McDowell's version that the Stones covered), Sitting On Top of the World (The Mississippi Sheiks), and Robert Johnson's Come On In My Kitchen. The idea of creating new songs with popular melodies is very common in the folk music world. Enjoy.