Chicago

Chicago was the longest-running and most commercially successful of the hordes of jazz-rock bands with horn sections that sprang up in the late-1960s wake of Blood, Sweat & Tears. After myriad personnel changes (including the death of founding guitarist Terry Kath due to a self-inflicted gunshot wound), Chicago eventually mutated into a more conventional pop group that was able to score hit after hit well into the '80s, usually with romantic ballads. They remain among the best-selling American bands of all time. In the mid 1990s they briefly returned to their roots with an album of big band-era standards given the Chicago treatment.

• rock
• pop rock