People forget just how popular Chicago were throughout most of the 1970s. They played stadiums and songs like "Saturday in the Park," "25 or 6 to 4" and "Call on Me" were all over the radio. They shared the bill with the Beach Boys and even had Bruce Springsteen and the E Street Band open up for them. The problem may be their most famous material is far from their best, and they've been slogging it out on the casino- and state-fair circuit for so long without original singer Peter Cetera that they seem like a pretty diminished force. Also, even at their peak, they never got a lot of critical acclaim. They may be one of those bands that just never gets in, but it's impossible to say for sure.