Jonno Frishberg is a classically-trained violinist who moved to Louisiana and has stayed.   This video is from a benefit concert at the Blue Moon Saloon & Guest House in Lafayette, LA to raise money for medical treatment for his wife, who had cancer.  Sadly, she passed away a few months after the concert.  Jonno (who usually goes just by his first name) is an excellent fiddler but has also picked up accordion.  He’s recorded as a member of Mamou and Charivari.  His last was a live album with his band, Bayou Deville entitled See Sharp and Be Natural