These days she may wail like a heartbroken teenage banshee, but it’s still easy enough to see why singer Haley Williams was briefly on the pop star fast track before insisting on going the punk route as part of a band. She was still mesmerizing in her guest spot with B.o.B last spring, though, so don’t expect December’s grouchy departure of co-founding guitarist Josh Farro and drummer Zac to derail anything. Meet their replacements at this 15th anniversary of Fueled By Ramen alongside labelmates including fun., The Stereo, The Swellers, and This Providence.

Wed., Sept. 7, 6 p.m., 2011