Jean-Luc, In his early work, Martin Carthy used EADEAE or DADEAE later he started using CGCDGA. Pat Kirtley is another guitarist who used EADEAE quite abit. I think it is an excellent tuning for Appalachian influenced music. Paul de Grae has written a book entitled "Traditional Irish Guitar" that deals primarily with DADEAE and EADEAE tunings. John