Atlanta Youth Wind Symphony, Scott Stewart, director, May 9, 8 p.m., Emerson Concert Hall, Schwartz Center, 1700 N. Decatur Rd., Emory University, Atlanta, Ga, 30322, 404-727-5050, www.arts.emory.edu. Led by Emory's director of wind studies Scott Stewart, the Atlanta Youth Wind Symphony is the premier youth wind symphony for high school youth in the Atlanta area, drawing the finest wind band performers from more than 50 high schools in 15 counties. The ensemble performs at Emory; tours domestically and abroad; and commissions, premieres and records new compositions.