Mike and Ruthy play Bluseed Studios in Saranac Lake at 7:30 p.m. Friday.

Michael Merenda and Ruth Ungar Merenda, who live in the Catskills, toured seven years with indie string band the Mammals before striking out on their own last year. “With a repertoire of old-timey twang, topical folk, and just plain love songs, their heartfelt vocal duets intertwine with lively fiddle & banjo,” the Bluseed Web site says. Tickets are $14.

Also Friday, at the Lake Placid Center for the Arts, violinist Mark O’Connor headlines a Hudson River Quadricentennial concert. O’Connor, who is classically trained but inspired by American folk, is joined by clarinetist Don Byron — who fuses jazz, classical and soul — and violinist Daniel Bernard Roumain, who’s into classical and hip hop. The three composer/musicians “have created new music inspired by the past, present and future of the Hudson River Valley.” Tickets are $15. The show starts at 8 p.m.

On Saturday at the Waterhole in Saranac Lake, Lazar Bear Productions presents Toronto-based Celtic rock band Enter the Haggis. Tickets are $18 in advance or $22 at the door. The show starts at 8 p.m.

OK, not music, but Academy Award–nominated writer and director Courtney Hunt will introduce a showing of her movie Frozen River, filmed in Plattsburgh. 8 p.m. Saturday at Willsboro Central School. Tickets $5 for adults, $2 under 18.

For more weekend ideas, North Country Public Radio has the region’s broadest online calendar of events.