Next to the Marcus Amphitheater headliner announcements for Summerfest, the Miller Lite Main Stage headliners are next in line as far as hope goes for music fans. Most of the nights have been announced. This year it looks like there is some of the standbys are back along with the likes of Matisyahu, Rusted Root, Trace Adkins, The Roots, Keller Williams, 311 and Jack's Mannequin. If you are trying to negotiate your visit to Summerfest, you always have to hope that you aren't dying to see both the Amphitheater act and the Miller act the same night, because generally speaking, you will be out of luck. It just gets too crowded to make your way down the grounds.