Geeziz........I dunno' Sorch....some weird stuff there.

Being an ancestor of the Appalachian Dulcimer I would try the varios modal tunings that are used by dulcimers. I have no experience with one at all Ma, but there's one in a museum down in Gallipolis. there's some thought that it was one of the major influences on the App design so take it from there!

Spaw