The Quebecois folk group Tidal Wave

At 8 p.m. Friday, Aug. 9, at Callahan Hall at the Lewiston Public Library, Lisbon St., Lewiston, and again at 1 p.m. Saturday, Aug. 10, at the Winthrop Performing Arts Center, 211 Rambler Road, Winthrop, the Quebecois folk group Tidal Wave — Raz de Marée — and friends, will sing and perform on fiddle, accordion, piano, and string bass, and give folk and contra dance demonstrations. Admission is $8, $5 for students up to age 22. For more information, call 207-782-0386.