Well, toss some of them out, I’m sure they have a presence on Vevo or YouTube. Love to hear good new music.
Here's a very random selection (youtube links):
Aq Bure - Tan Aldy / Ак Буре - Тан Алды (Tatar folk metal)
Auļi - Sūda dziesma (Latvian folk music, with medieval bagpipes)
Wolfmare - Twa Corbies (A Russian band's souped-up rendition of Steeleye Span's rendition of an old English folk song)
Flickan går på golvet (Swedish, with "keyed fiddles")
Erja Lyytinen - Not a good girl (American blues, from Finland)
Moonsorrow - Raunioilla [At the Ruins] (One of the most important Finnish folk metal bands, but probably unknown to most Americans. I included this partly for the incredible photography of Scottish ruins and landscapes.)