There are two artists called Mountain Man:

1) An American folk trio from Bennington, Vermont.
2) An American hardcore band from Massachusetts featuring members of I Rise and Last Lights.

1) Mountain Man is an American folk trio from Bennington, Vermont, comprising Amelia Meath, Molly Sarle, and Alex Sauser-Monnig. They often sing a cappella.
There’s a fragile balance between the three very different styles and personalities in the three women.