The core trio breaks down the record that yielded Chicago's first No. 1 hit...and almost broke up the band. The team collaborates on a polarizing new theme song and contemplates the future. Sam introduces the Happy Man segment, in which a rotating member of the team is forced to defend the band. Plus: Pank on cocaine, the last of the Grady's, Todd Rundgren's love of iPads, a very special episode of Stank Alert, and much more!