Atlanta-based indie/alt/folk group von Grey will perform at 7 tonight, Feb. 27, at the Gem Theatre, 114 N. Wall St. in Calhoun, Ga. The four sisters — from left, Annika (violin, banjo, guitar, keys), Petra (keys, lap steel guitar, electronic percussion, background vocals), Kathryn (cello, bass pedals, mandolin, keys, background vocals) and Fiona (guitar, violin, percussion) — have appeared on talk shows from “Conan” to “Late Show With David Letterman,” played festivals ranging from South by Southwest to Bonnaroo and opened for artists including Indigo Girls and Sarah McLachlan. Tickets are $5 to $12 if purchased in advance (more at the door). To inquire about ticket availability, call 706-625-3132 or visit www.calhoungem.org.