The Youth Orchestra of Lewiston-Auburn and the Hebron Academy Jazz Ensemble will perform at 7 p.m. Tuesday, May 7, at the Bates Mill Atrium, Lewiston, as a prelude to the opening of Museum L-A’s next installment in the “The Power of Music” exhibition series, “The Roaring 20s to Swing” which opens in June. The concert is open to the public free of charge. Parking for the concert is available free of charge after 6 p.m. at the nearby Canal Street and Chestnut Street garages. For more information, contact Museum L-A at 207-333-3881.