Rock music is a vital component of the Americana "big tent," and ROGER CLYNE & THE PEACEMAKERS epitomize it. Hard enough to keep the heads bobbing, but with an extra element of gentility to make you listen closely Mon., JULY 21. Jim Bianco's gritty songs follow the trail of folks like Tom Waits, and while such comparisons seem blasphemous, in this case it's legit. $15. 8 p.m. Smith's Olde Bar, 1578 Piedmont Ave. 404-875-1522. www.smithsoldebar.com.