Justin Bieber is in Nashville for a Wednesday night (Aug. 11) concert at the Bridgestone Arena.

According to a report from his afternoon soundcheck, somebody asked him about his favorite country artists, and he immediately reeled off the names of Tim McGraw, Rascal Flatts, Martina McBride andAlan Jackson. Then, in an imprompt move, he sang the entire first verse of Jackson’s “Chattahoochee.”