Rock bands Chicago and REO Speedwagon have announced a new co-headlining tour that will stop in Colorado on Wednesday, June 20.

The bands – who have sold 140 million records combined – will play at Denver's Pepsi Center.

In a news release, Chicago said they will be performing their historic album Chicago II in its entirety followed by their other greatest hits.

Tickets for the Denver concert go on sale Friday, February 9 at noon at and for between $20 and $200.

“It’s always a party sharing the stage with Kevin, Neal, Bruce, Dave and Bryan! They rock. We rock. The tour rocks!" said Chicago’s Robert Lamm in a news release.