Chicago 13 marked a turn toward a more pop-oriented sound for the band, featuring slick production and fewer of their signature jazz-fusion elements. The album's lead single, "Street Player," reached number 1 on the Billboard Hot 100.
- The album was produced by Tom Werman, known for his work with hard rock acts, a departure from Chicago's previous producers. Guest musicians on the album included members of Earth, Wind & Fire.
- Chicago 13 was the first Chicago album to not feature guitarist Terry Kath, who had died earlier that year. It reached number 13 on the Billboard 200 chart.
- The album's cover art, featuring a stylized illustration of the band members, was designed by the acclaimed graphic design firm Hipgnosis.
Chicago is a rock band from Chicago, Illinois, known for its jazzy, horn-laden sound. They found mainstream success in the 1970s and 1980s with a string of hit singles and albums.
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