The song is a 12 bar blues in D. The pattern is essentially: I I I I IV IV I I V V I I with a small twist. Any bar that comes before a I (the D chord) is descending 4 chord pattern of D C G F. In this case, it is the 2nd bar, the 6th bard and the 10th bar. The intro is just the 1st 8 bars. [Intro] D D C G F D D G D C G F D D [Verse] D D C G F D D I'm Going down, I'm goin' down down down down down G D C G F D D I'm Going down, I'm goin' down down down down down A D C G F D D I got my big feet in the window, and my head down on the ground (Same chord progression) Let me down, and close that box car door Yes, let me down, and close that box car door Well, I'm goin' back to Chattanooga, and sleep on sister Irene's door [Solo] [Verse] Yes, I'm going down, I'm going down down, down, down I'm going down, I'm goin' down down down down down Yes, I got my feet in the window, I got my head on the ground Fades out