Ballet dancers ( from left) Julia Fasse, August Eaton and Erin Norris rehearse a scene from the Bangor Ballet production of “Swan Lake.” Forty young dancers from the Central Maine area will perform in the full-length production of the ballet. “Swan Lake,” with a score by Tchaikovsky, tells the story of maidens who, under the spell of the evil Rothbart, are turned into swans by day and can only take human form at night. Prince Siegfried falls in love with Odette, the leader of the white swans, but Rothbart and the evil black swan, Odile, have other plans. Performances will take place at 7 p.m. Saturday, June 1, at Gracie Theatre at Husson University and at 4 p.m. Sunday, June 2, at Ellsworth High School. Tickets are $20, $8 for children and students, available at Thomas School of Dance, 14 State St.; Patrick’s Hallmark Shop in Bangor Sherman’s Bookstore in Bar Harbor; or by calling 945-3457.