Trio Mandili is a band from Georgia that sings folk songs. Sometimes from other countries too.
They got somewhat popular by recording themselves with a phone while walking around and singing. Also they're just lovely.

https://youtube.com/watch?v=FFyMYRztzSc
https://youtube.com/watch?v=s0TcKMyg7X8
https://youtube.com/watch?v=gcC2dXYdmwU
https://youtube.com/watch?v=HRCrCCzfArA
https://youtube.com/watch?v=rSaTUWaoTUg