ANITA BAKER has achieved longevity in her career that many new artists pray they'll see, but probably never will. Since her debut in 1983, The Songstress, she's won eight Grammy Awards, seen four platinum albums and three gold. And at age 51, she's still got it and is still performing. Don't miss her one-night-only performance as a part of the 2009 Delta Classic Chastain concert series. $25-$69. 8 p.m. Chastain Park Amphitheater, 4469 Stella Drive. 800-745-3000. www.classicchastain.com.