Auburn Avenue is a living record of what Atlanta was and what it is becoming. Celebrate its culture and heritage at the three-day SWEET AUBURN REUNION SEPT. 21-23. Hosted by the Friends of Sweet Auburn, the event kicks off Friday with an oldies concert and an awards ceremony for the area's legends, heroes and heroines. Entertainment includes performances by Auburn-area church choirs, the Clark Atlanta Players, the African-American Symphony, Univer-Soul Circus, and other spoken-word, music and live events throughout the weekend. A blood drive and a special "Tribute to America service also are scheduled. Free. Fri. 6-9 p.m.; Sat. 11 a.m.-10 p.m.; Sun. 2-8 p.m. 240 Auburn Ave. 404-886-0986. www.sweetauburn.com.