For Zaireeka which came as 4 cds. Here is a quote from "Psychotic Reactions and Carburetor Dung" by Lester Bangs (reviewing a Chicago album):
"When they get to Chicago VII, they can release a seven-record set, with one entire album for each member of the group - a whole record of nothing but Peter Cetera's bass, another of Lee Loughnane on trumpet, etc. - playing a forty-minute version of "Does Anybody Really Know What Time It Is?" and then we can get seven record players, and have the greatest concert of all time."
Creem, February 1972