Celebrate the opening of the new VERIZON WIRELESS AMPHITHEATRE AT ENCORE PARK with an inaugural concert by the Atlanta Symphony Orchestra. The program includes music by Bernstein, Copland, Gershwin, Beethoven and Tchaikovsky. The Atlanta Youth Symphony Orchestra and marching bands from Alpharetta and Milton high schools join the ASO for the finale performance of “1812 Overture.” The show starts at 8 p.m. this Saturday, May 10 at the new amphitheatre in Alpharetta. Ticket prices range from $21 to $75. 404-249-6400. www.vzwamp.com.