Celebrities visiting Nashville usually proclaim their love of country music, but they're often hard-pressed to cite any artists beyond Willie Nelson, Dolly Parton or maybe Johnny Cash. That's why Justin Bieber's apparent knowledge of country is so surprising. The teen heartthrob 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 and Alan Jackson. Then, in an impromptu move, he sang the entire first verse of Jackson's "Chattahoochee." Regardless of your opinion of Bieber, you've got to respect any teenager who can sing part of a country song that topped the chart a year before he was born. I'd have been even more impressed had he chosen Jackson's "Here in the Real World," but that's beside the point. I wonder how many of today's newer country acts know the words to "Chattahoochee."