A massive four-level restaurant/bar with a guitar-shaped rooftop is now entertaining with live music seven days a week on Lower Broadway. The 40,000-square-foot Nashville Underground debuted last month after a $13 million renovation that began in 2016 to expand the original 1,600-square-foot National Underground at 105 Broadway. Owners Joey and Gavin DeGraw, brothers and singer-songwriters, […]