Vocalist, accordionist and seljefløyte (willow/sallow flute) player Arna Rennan heads up this quartet of Norwegian folk musicians. Her husband, Brian Dack, plays acoustic guitar and contributes vocals as well. Doug Greenwood doubles as an electric guitar and ukulele player, and Cathe O’Bey rounds out the foursome on the contrabass. The music of Nordic Angst consists of modern arrangements of traditional Norwegian folk. Some of it is instrumental, but much of it is sung in its native Norsk. The group has been playing Nordic folk for 18 years.

8pm Fri 5/6 at Sacred Heart Music Center