The '60s rock band the Guess Who have released many hits compilations, but initially the two best-of albums of 1971 and 1974, respectively. Two superior collections have been released in the CD era, 1988's Track Record: The Guess Who Collection and 1999's Greatest Hits. Track Record: The Guess Who Collection includes all but two songs from volume one and all but four from volume two. Those who want the four left off of Track Record: The Guess Who Collection will find them on Greatest Hits. (FYI, they are: "Broken," "Life in the Bloodstream," "Orly," and "Glamour Boy.") The difference between the two modern collections is somewhat academic, as they are virtually the same collection. The differences, however, are noticeable to Guess Who fans and music reviewers.