While certainly not emerging musicians, you should look at The Transatlantic Sessions videos on You Tube. I believe the project was the brainchild of Jerry Douglass and Aly Bain. The recordings bring together artists from both sides of the Atlantic to explore the roots and shoots of Celtic music. Good stuff there..
Here's a blast from the past. Wynonna Judd, an 18 year old girl from Eastern Kentucky. She burst onto the music scene from obscurity in 1984 singing alongside her mother. The first time I heard this unknown artist, I was on lunch break at my mining job, listening to WSGS out of Hazard. With the first chords and lyrics reaching my ears, I knew I had never heard such raw vocal power. https://youtu.be/fXV1Q_AcerM