Hey Jerry--about arranging the music--is it something you write out, or is it just worked out during rehearsal? And if the latter, how can you be sure each person will do what he did last time?--(unless you rehearse each song so often it becomes ingrained.) That's what I did when I had my Watersons style group--which became a sea chantey group. I just encouraged people to experiment--and when something clicked we all could tell. (And we had the Watersons as a sort of model).