Five-piece Sarasota string band Passerine is nothing fancy: As standard and strong harmonies sweep behind the stories of singer Carmela Pedicini, a fiddle saws its reassurance a plinking upright bass. The full-bodied sweep of an acoustic guitar brushes above the omnipresent sighs of an expertly played dobro. But the band's songs about the sweetest sights and biggest dreams, and the casual confidence with which they deliver them, offer the basic balm of folk music at its best: a song that speaks your own worries and sings a way back out of them. They'll play the Triangle three times in the next few days—tonight at The Cave, Wednesday at Caffe Driade and Thursday at Durham's Broad Street Café. Tonight's free show starts at 10 p.m. —Grayson Currin