For country star Zach Bryan and the University of Michigan, there’s a magic number looming: 110,905. When Bryan performs at Michigan Stadium on Sept. 27, that's the attendance figure he’ll need to exceed to break the record for the biggest ticketed concert by a single act in U.

The country superstar will be joined by John Mayer, Ryan Bingham and The Texas Gentlemen, and Joshua Slone for his Sept. 27 show.

Bryan and Mayer will be joined by special guests Ryan Bingham and the Texas Gentlemen and Joshua Slone for the Sept. 27 show.