Don found the PLUNKETY PLUNK SCHOTTISCHE in the U.S. Library of Congress. It was written in 1892 by George Barker originally for 3 guitars. Directions call for preparation of Guitar 1 "To Imitate The Banjo". Guitar 3 plays with a Capo D'astro at 7th fret. The composer's instructions for preparation of Guitar 1 are quoted below:

Place a strip of paper six inched in length, and one half in width through the strings as follows: Over the small E, under the B, over the G, and D,under the A, and over the large E string, Both ends of paper to be tucked inside the guitar through the sound hole.

Don thought that such a large piece of paper deadened the sound too much and used a 1 mm wide strip from an overhead transparency sheet, about 8 inches long. We did not tuck either end into the sound hole.