Released in the autumn of 2016, just over a year after Wild Ones and while Kip Moore was working on a new album, the Underground EP contains two new studio cuts and three live performances of unrecorded songs. All five follow through on the muscular heartland swagger of 2015's Wild Ones and, in a few places, there are explicit connections to Moore's influences: "All Time Low" nods at Waylon Jennings and "Midnight Slow Dance" is a dead ringer for Darkness on the Edge of Town Springsteen. Such hero worship doesn't restrain Moore; it emboldens him. If his growl can sometimes seem affected, the music is lean and sinewy, some of the best he's made.
AllMusic Review by Stephen Thomas Erlewine