Trying to figure out who it might be....Dallas Clark's video said "this is going to be epic" and also "Iowans love Iowans, and Iowans love a good time"....Only Iowa ties I can think of that remotely resemble "epic" is the guy from Weezer, Aerosmith (Steven Tyler's son in law is from Iowa), and of course Slipknot (or another band any of those guys are tied to). Probably missing some country musicians.
Dallas Clark is well known for his ties/friends to a Wisconsin cover band called Vic Ferrari, whom have played annually in Livermore, his hometown, and more than a few times in Fort Dodge area (probably elsewhere in state as well)...but he does have connections in music world...I'm liking the tease, but coming up short on bands that are Epic that could play Kinnick, with Iowa ties....of course it's wide open if you take away Iowa connections... They said more to follow at this week's game!
PS Westender....envious of your attending AC/DC at Wrigley, awesome show I heard!