For three years "Nashville Star" has mirrored "American Idol's" shtick. Although it's nowhere near as popular as the international phenomenon, "Nashville Star" has a pool of talent that is a couple of notches above the karaoke clowns on "Idol." This year's NASHVILLE STAR TOUR, coming to Mable House Barnes Amphitheatre JULY 30, presents winner Erika Jo, a big voiced teenager who is a dead ringer for "SNL's" Cheri Oteri, starched-shirt singing cowboy Jason Meadows, singing preacher Jayron Weaver from Dallas, Ga., and rockabilly-lite boy Jody Evans. I bet they do some cover tunes. See Vibes, p. 85. 8 p.m. $15-$36. 5239 Floyd Road, Mableton. 404-249-6400. www.mablehouseamphitheatre.com.