No question that this is indeed the most concise, exciting single CD best-of covering Chicago's early hit period.Only two songs get the single editing treatment: Make Me Smile, and Does Anybody Really Know What Time It Is?The only really frustrating thing about this CD is that the group regained the catalog from Columbia. Since then, Columbia has been remastering their Greatest Hits line (B,S&T, Byrds, Donovan, etc) adding bonus tracks to boot.Chicago Records has to date failed to do the same. This means that this terrific Chicago best-of still has mid '80's sound quality.Suggestion: Chicago records remaster the catalog and add needed bonus tracks where available.