Any discussion of Friday's show, however, would be incomplete without giving a bit of well-deserved praise to the incomparable Grace Potter & The Nocturnals. Playing a set before Brown, the Vermont native defines the terms "charisma" and "swagger." There's no doubting either her talent or her sex appeal – and when she puts it together as she does on songs like "Ooh La La (Paris)" or "One Short Night," you will no doubt be mesmerized and also wonder why she is not a household name. Another highlight of her set was a tip of the hat to Elvis Presley on "Mystery Train."

http://www.billboard.com/articles/columns/the-615/5740654/zac-browns-southern-ground-festival-cooks-up-big-duets-and-fiery

If you wanted to, you could do worse than checking out Kacey Musgraves