JJ Grey was his normal engaging self while Jonny Lang limped through a troubled set at Red Butte

Sometimes a co-headliner act at Red Butte seems a little unfair for the act that draws the short straw and has to take the stage first.It’s usually blazing hot, the sun is in your face, and the audience is still milling around, struggling to set up lawn chairs or open bottles of wine and noshing on cheese and crackers.And when JJ Grey and Mofro hit the stage Monday evening, sure people were still filtering in and setting up camp, and the band had to be roasting, dressed all in black (excep