This duo were busking in Quimper. Excellent music (Blind Mary by Carolan)on really unusual instruments: a 19 String Arch Harp Guitar and a Nyckelharpa, you can see the detail better on the other clip. They were called 'Bardou'.
This clip shows the unusual instruments (a 19 String Arch Harp Guitar and a Nyckelharpa) much clearer than the other video I have. However, I prefer the music on the other sample.