One of the interesting things about Chicago from 1969-1974 was that their albums always contained a combination of material that sounded great on AM radio alongside very long album rock tracks that didn't have a chance of getting anywhere near the pop charts. Unfortunately, by the time of Chicago VIII, the band's collective eccentricities took a back seat to Peter Cetera's vocals and the pop ballad formula. The follow-up to Greatest Hits (Chicago IX) contains material from that era, including "Baby, What a Big Surprise," "Gone Long Gone," and "If You Leave Me Now." However, It does contain a few tracks from the previous era that didn't make onto the first set, including "Dialogue, Pt. 2" and "Questions 67 & 68."
AllMusic Review by Al Campbell