LEJ asks, "What has this got to do with folk music?" Well....Allow me to try to make some sense of this for him and others who may inclined to similar thoughts!

Since the beginning of time, man has needed and 'outlet' if you will for his musical talents. When Adam got tired of blowing on the blade of grass between the thumbs and took to eating the grass he found yet another expression for his musical urge. He found that by varying the type and amount of foilage he could 'tune' his newfound instrument. (Historical note: It was not the eating of the apple that actually got him and Eve thrown out of the garden. The odor that resulted from that diet change is what did it!)
Since that humble beginning folks all over have been trying to express their musical 'inner selves' and expand on the playing of the Butt Trumpet. I have heard of many attempted variations of tuning the instrument but the most bizzare was the story of the young lad eating a roll of pennies. When asked why he did that he explained he was trying to tune the Butt Trumpet to sound more like a penny whistle.