B Side to reopen for live music, with Nashville singer, Sheehan, on Sept. 5 By PATRICK DEWEY • Special to www.AllOTSEGO.com After being closed for a year because of the coronavirus pandemic, the B Side Ballroom in Oneonta’s Clinton Plaza will offer live music again starting at 7 p.m., Saturday, Sept. 5. The first show will be by acoustic singer-songwriter Trae Sheehan. Sheehan is touring in support of his new album “Hello from the End of the World,” which will…