Theory Expats will perform in tonight's (Thursday, Aug. 20) Town Hall Concert Series. The performance is at 7 p.m. on the third floor, according to Wendy Chappell-Dick.

WATCH THE VIDEO BELOW.

She describes the group this way: "Theory Expats are a folksy swingin' band based in Goshen, Ind., featuring Andrew Pauls, Ethan Setiawan and Sadie Gustafson-Zook.

"Sadie won the 2011 New Song Showcase songwriting competition. Ethan was awarded a full scholarship to Berklee School of Music, performed on Prairie Home Companion and won the National Mandolin Championship, all before the age of 18.

"Their sound draws from their collective backgrounds in folk, bluegrass, jazz, swing, rock and pop into a cohesive musical vision with acoustic instruments, rich harmonies and technical chops. These three talented musicians are sure to provide a fun night of flyin’ fingers and maple syrup voices.