Mark O'Connor's Appalachia Waltz Trio and violinist John Blake Jr. will perform a concert Saturday to raise funds for Musicopia. Joining O'Connor and Blake are violist Rebecca Albers, cellist Mike Bloke, pianist Sumi Tonooka and bassist Avery Sharp.

The concert begins at 7:30 p.m. Saturday at the Independence Seaport Museum, 211 S. Columbus Blvd. Tickets are $35 adults, $15 youth.

Info: 215-829-9522. *