The first video below is the JJ composition  "Feet on the Ground". This was written circa 1976 and was first released on a Kicking Mule album around that time. In the key of D, with the 6 string down to D. This gives a big open sound on the acoustic guitar, especially if you are using the body of the guitar to amplify the sound rather than a pick-up. The piece is best described as a folk dance.        




Again from the archives a performance of the classic Carl Kress & Eddie Lang piece Carl Kress's part which you can hear on the tape is played on a FyldeOberon tuned Bflat F D G A D. - a very  low bass.