Biggest U.S. Music Festivals Listed, Per State

For as long as I can remember, I've had a bucket list summer road trip planned to every Major League Baseball park. I think I now have a better idea thanks to Promotions Now who built a music festival map of the United States. What do you think is the "biggest" music festival in Montana? Check that and what every other state offers here.

Biggest Music Festivals per State (Promotions Now)