Fans attending Jason Aldean's sold-out concert at Chicago's Wrigley Field on Saturday night (July 20), definitely got their money's worth. Kelly Clarkson joined Aldean onstage for their multi-platinum hit, 'Don't You Wanna Stay.'

The No. 1 tune, Aldean admits, makes him anxious every time he sings it with the songstress. "I am really proud of this song," he said. "Anybody who says they wouldn’t be nervous to try and go note for note with a vocalist like Kelly Clarkson is straight up lying to you!"

Fans attending the concert braved pouring rain throughout most of the show, which also included performances by Thomas Rhett and Jake Owen.

Clarkson also joined Aldean onstage to perform at the Faster Horses Festival on Sunday (July 21). He will continue his Night Train tour with stops in Wyoming, Utah and Idaho this week. See all of his upcoming shows here.

Chris and Todd Owyoung
Chris and Todd Owyoung
Chris and Todd Owyoung