Obviously, Summerfest is well known for having hundreds of bands perform. But what about the audience?Could they put together a song on the fly?I put the idea to the test. I asked Summerfest fans to come up with a song Im callin g Summerfest Blues.Watch the video to hear the song fans came up with... Fans create impromptu Summerfest song at the Big GigIts about time to watch on your time. Stream local news and weather 24/7 by searching for TMJ4 on your device.Available for download on Roku, Apple TV, Amazon Fire TV, and more.Report a typo or error // Submit a news tip ...read more read less