Chicago is performing at the Cross Insurance Arena in Portland, Maine on Friday, June 21st. Here's how to win tickets…

Listen to AJ and Nikki Thursday and Friday morning, because at around 7 a.m., they'll play a game called "Is it AJ or Nikki?". We're going to find out how well you know us on the morning show. If you correctly guess the answer to both questions, you are the "Superfan of the day" and you win the tickets. Even if you're new to the show, you still have a 50% chance of getting the answers right. Our studio number is (800) 228-1949.

The line-up for Chicago includes four original band members: Robert Lamm on keyboards, vocals, Lee
Loughnane on trumpet and vocals, James Pankow on trombone and Walt Parazaider on
woodwinds.

Tickets are on sale at CrossArenaPortland.com or the Trusted Choice Box Office. Ticket prices start at $58.