What are some composers from your country that are largely unknown but composed in a way that involves ideas from the local folk music?
I will start the thread with some Greek composers (88 works where possible):
Giannis Konstantinidis
Marios Varvoglis
Nikolaos Skalkottas (who mainly wrote in a serialist style)
Manolis Kalomiris
Manos Hatzidakis (more contemporary)
Stenhammar, Alfvén
From US?
En skargardssagen is one of my favorite orchestral works, sheer genzui and very unique atmosphere.
From Stenhammar I have only liztened to this random choral piece
I wouldn’t call da legendery Manila “unknown” 
I should probably read the threads before spamming them lol
It’s the other way around here, I know very little Alfvén (no piano) but I like Stenhammar - a little bit at least. His is also the most Swedish sounding music of the classical composers I know. It captures a bit of the language, a bit of the nature, and a bit of the national character.
Geirr Tveitt
Klaus Egge
Right, an even better example from here is Wilhelm Peterson-Berger.
I played his Frösöblomster once, nice pieces in “salon”-style.
Yes, I grew up with them. Chopin and Peterson-Berger were heard daily in my childhood home through my brother and dad’s playing.
Atterberg iz ma fav Zwedizh cumpoza, rezpec!
Damn, I was waiting for the potato contribution here. What about the Brits? Vaughan Williams I suppose, but he’s hardly unknown.
Maybe Samuel Coleridge Taylor? I’ve known about him for years but never explored his music.
Edit: I didn’t see the precision about folk elements. Maybe Percy Grainger for the Poms (country gardens etc), but he was Australian.
Aware ov diz Zcottizh themed 88 concerto? 
Beautiful writin n catchy folk Zcot themez by an Englizh cumpoza