Overall Rating: 4.6 (of 5)
This is a sixteen bar blues pattern based on twelve bar blues. The point is to keep repeating the whole thing with new and more interesting licks until your tired of it. I find I can jam on it for a long while, looking for interesting tones and ways to stump my thumb (that is - get so tricky with your licks that the thumb just can't keep going). Sometimes in the "sloppy" style of the Delta-Blues players I can pull out of a train wreck with some quick thinking, sometimes I crash and burn and have to stop and laugh! The most difficult part I find is usually to be able to fret the B in the bass without loosing track of where my melody was wanting to go. It requires an ability to look ahead - you have to be in either the seventh or first position to get that low B. You can also do dead thumb blues in A, in which you'll have the root, fourth, and fifth available on open strings, but you have less strings available to improvise on.
Good luck and send me a message if you have any questions or comments.