I think Folk Metal is the Fusion between Heavy Metal and traditional folk music around the world. Using more or less specific folk instruments (bets example I have in mind is Waggaki Band from Japan), using more or less traditional singing. Ussually, it's a melodic style anyway, whatever we talk about heavy, power or death/black metal.
Just few suggestive examples: Waggaki Band (already named), Myrath from Tunis, Falconer from Sweeden, Orphaned Land from Israel, Melechesh also from Israel (mesopotamian Black Metal), Arkona and Imperial Age from Russia, Bucovina from Romania and so on. Hope being useful in my comments.
Yes, thank you for your suggestions and your help..I will have to look into some of the bands you have mentions...Sounds like an interesting genre of metal--8-]]
