The headliners of Summerfest 2017 Future (pictured), Big Sean and Migos will headline the American Family Insurance Amphitheater on Saturday, July 8.Photo by: Riley, Marcus The headliners of Summerfest 2017 The Chainsmokers hit the stage at the American Family Insurance Amphitheater on Tuesday, July 4 at 7:30 p.m. For more information, click here.Photo by: Mauricio Santana The headliners of Summerfest 2017 American music icon Paul Simon will headline Summerfest's American Family Insurance Amphitheater on June 30.Photo by: Joe Raedle The headliners of Summerfest 2017 Country star Luke Bryan will perform at the American Family Insurance Amphitheater on Thursday, June 29 at 7 p.m. For more information, click here.Photo by: Mike Coppola The headliners of Summerfest 2017 Tom Petty & The Heartbreakers will perform twice this year at the American Family Insurance Amphitheater. First performance is on Wednesday, July 5 at 7:30 p.m. Second performance is on Thursday, July 6 at 7:30 p.m. For more information, click here.Photo by: Kevork Djansezian The headliners of Summerfest 2017 Zac Brown Band will take the stage on Saturday, July 1 at 7:30 p.m. For more information, click here.Photo by: Ethan Miller The headliners of Summerfest 2017 Pop star P!nk will be at the American Family Insurance Amphitheater on Sunday, July 2 at 7:30 p.m. For more information, click here.Photo by: Dave Kotinsky The headliners of Summerfest 2017 Dierks Bentley will headline the American Family Insurance Amphitheater on Friday, July 7 with special guests Cole Swindell and Jon Pardi.   Tickets for Dierks Bentley with special guests Cole Swindell and Jon Pardi go on sale Thursday, April 13 at 10:00 am Photo by: Rick Diamond The headliners of Summerfest 2017 The Red Hot Chilli Peppers will hit the American Family Insurance Amphitheater first in 2017. They will perform on Wednesday, June 28 at 7:30  p.m. For more information, click here.Photo by: Gustavo Caballero The headliners of Summerfest 2017 Bob Dylan is arguably the most influential musician in the American folk rock scene. Last performing at Summerfest in 2009 with Willie Nelson, Dylan continues his remarkable 29-year-old Never Ending Tour. He will close Summerfest on July 9.Photo by: Christopher Polk The headliners of Summerfest 2017 Grammy Award Winning singer-songwriter, and Former Drive-By Trucker, Jason Isbell joins Outlaw Music Festival with his band The 400 Unit on July 9 as a closing act.Photo by: Jason Davis The headliners of Summerfest 2017 Nine-time Grammy Award winner Sheryl Crow will close Summerfest 2017 on July 9 as part of the Outlaw Music Festival.Photo by: Jason Davis Willie Nelson's Outlaw Tour to headline at Summerfest. Willie Nelson's Outlaw Tour will headline at Summerfest.Photo by: Jason Davis