Chicago is an American rock band formed in Chicago in 1967. The group began calling itself the Chicago Transit Authority (after the city's mass transit agency) in 1968, then shortened the name in 1969. Self-described as a "rock and roll band with horns", Chicago was much influenced by jazz in its ea
Chicago is an American rock band formed in Chicago in 1967. The group began calling itself the Chicago Transit Authority (after the city's mass transit agency) in 1968, then shortened the name in 1969. Self-described as a "rock and roll band with horns", Chicago was much influenced by jazz in its ea
