ROCK THE BELLS, a touring festival that hits HiFi Buys Amphitheatre Thurs., AUG. 2, has a dream lineup for hip-hop fans. The mighty Wu-Tang Clan headlines, touring for the first time in several years in anticipation of 8 Diagrams, a new album due out this fall. Queensbridge poet Nas packed the Tabernacle earlier this year, and UGK is riding high on the success of its new single with OutKast, "International Players Anthem." Erykah Badu, Mos Def (pictured) and Talib Kweli as well as Pharoahe Monch, David Banner, Immortal Technique and Jedi Mind Tricks fill out the superstar bill. Freestyle king Supernatural and beatbox wizard Rahzel serve as hosts. For more on Rock the Bells, read the Vibes feature here. $35-$125. 3 p.m. 2002 Lakewood Way. 404-443-5090. www.rockthebells.net.