In light of all the questions and comments lately about alternate tunings, modes, etc., here's a mind-blowing site I found which may be of great interest and help to other 'catters.Anita Kermode has copiled over 120 alt. tunings for banjo, and has many suggested songs and a few chord forms to go along with them.
http://zeppmusic.com/banjo/aktuning.htm
The "mountain minor" or "sawmill," two or three "dead man" tunings, and all manner of modal stuff is there.
Such a labor of love.
CC