In keeping up with the wide variety of concert tours and appearances heading our way, here is the latest from the guys in Gov’t Mule who will be doing a half-dozen shows with the Avett Brothers. Check out the full press release and the dates below the poster. The Press Release: Gov’t Mule’s DARK SIDE OF THE MULE & The Avett Brothers will be joining forces for a run of six summer co-headlining…