Chicago plays the Hard Rock Live in Hollywood on Thursday, April 4th.
Fans will have a chance to bid on a once-in-a-lifetime opportunity to sing with the band!
You can bid on a special package that includes two premium tickets, backstage passes to meet the band, and the opportunity to sing Chicago's #1 hit song "If You Leave Me Now" onstage with the band during the concert!
All proceeds will go to the American Cancer Society's fight against breast cancer.
The concert at the Hard Rock is scheduled to begin at 8 p.m.
For tickets or more information click here.