I listened to a live recording of the Carousel Of Progress, circa 1980 or therabouts today and for the first time in conscious memory was able to hear the original Act IV closing of the show that was replaced in 1981 by the version we're more familiar with (and released on the WDW Forever CDs). Although almost all of the prologue narration is missing I could already tell it was different. Acts I, II and III were not changed in the entire run of the show, while the "Now Is The Time" family vocal of Act IV was the same used throughout the entire run. The big difference though was the different dialogue and cast voices in Act IV (aside from Andrew Duggan), where there was a much bigger stress on promoting the GE message of electricity as progress than in later years. The tone in fact was a lot more reminiscent of the original World's Fair and Disneyland version of the show. Big surprise #2 was a female vocal group disco version of "Now Is The Time" for the Exit Music. It reeks of the 70s in the same way the exit music for "America Sings" does. At any rate it was nice to discover more nuances in the audio/musical history of this great Disney attraction.