Kelsea Ballerini is singing about drinking. During a “Country Heat” event at the Country Radio Seminar in Nashville, Kelsea debuted a new tune, which she described as her first-ever drinking song. So far the song doesn’t have a name (although the speculation is that it could be “Hole In The Bottle”) but it’s expected to appear on the singer’s upcoming album, “kelsea,” which is due out March 20th