Emory Youth Symphony Orchestra, Richard Prior, conductor, May 7, 8 p.m., free, Emerson Concert Hall, Schwartz Center, 1700 N. Decatur Rd., Emory University, Atlanta, Ga, 30322, 404-727-5050, www.arts.emory.edu. As featured on Atlanta’s local news, the 90-member youth orchestra is comprised of exceptionally talented young musicians from more than 40 high schools in the metro Atlanta area.