I will post my fave's but I would love to find some new bands in the Nordic folk scene. I like both traditional and new edgy folk stuff.

Valravn
Eivor Palsdotter (Eivor is a Goddess to say the least)
Garmarna
Hednigarna
Annabjorg Lien
Ranarim
Gate
Hardanger Fiddle music
Vartiini
Krauka
Fejd
Slingerbult
Irminsul (Celtic)
Omnia Neocelt
Hagalaz Runedance


I would love to find more from Denmark =)