Conversation so far:
What was Chicago Transit Authority?
Chicago Transit Authority is the self-titled debut album by the Chicago-based rock band Chicago Transit Authority, later known as Chicago.
What was Chicago's first success?
Chicago's self-titled album was a commercial success, rising to number four on the Billboard 200, and was certified gold by the Recording Industry Association of America in 1970.
Are there any other interesting aspects about this article?
In 2017, Peter Cetera, Robert Lamm, and James Pankow were elected to the Songwriters Hall of Fame for their songwriting efforts as members of the music group.

Question: What other successes did they have?
Self-contained rewrite: What other successes did Chicago have?