
This is a neat circle of fifths ragtime-blues number cautioning infidelity. Though it's in G it starts on the III, the B7, A form, 4th fret. It walks through the progression - E, A, D - until it gets to the G and works it's way through the Blind Blake G turnaround, G, G7, C, Eb7, runs down G to G, 1st string through the 3rd. It then takes the middle notes of the E form G, on there 2nd and 3rd strings and walks down chromatically to the open strings. Then it repeats the Blake run, double time.