Chicago was formed in 1967, featuring Robert Lamm, Lee Loughnane, James Pankow, Walt Parazaider, Jason Scheff, Tris Imboden, Keith Howland, Lou Pardini, and Walfredo Reyes, Jr. They have sold over 38 million units in the US, with 22 gold, 18 platinum, and 8 multi-platinum albums. Over the course of their career they have had five number-one albums and 21 top-ten singles. According to Billboard chart statistics, Chicago is second only to the Beach Boys as the most successful American rock band of all time, in terms of both albums and singles.
In 2012, Chicago teamed up with the Doobie Brothers for a joint tour. Their songs are still easily recognized and enjoyed by millions of Americans.