Kenny Chesney has been added to a jam session at the Zac Brown Band’s Southern Ground Music and Food Festival in Nashville, according to an announcement on the festival’s website. The festival is set for Sept. 27-28 at Riverfront Park. Chesney will join Jason Mraz as guests during the Zac Brown Band’s “super set” on … More Kenny Chesney to Jam at Zac Brown Band’s Southern Ground Festival in Nashville