One of my inspirations growing up was experiencing the New York World's Fair in 1965. The one show I remember most is the DuPont "Wonderful World Of Chemistry". It was at this performance that I first heard a really high-quality and high-power music amplification system. Up until that time, movie theater sound was about the best I had heard. When the music started playing, featuring brass instruments and heavy percussion and bass, at first I thought there must be a jazz orchestra somewhere "behind the scenes". However, there was also a chorus and spoken dialogue and the sound seemed to be coming from different directions from one moment to the next. So I knew it had to be a recording playing back through a really powerful and "live sounding" multi-channel sound system. Fortunately, a recording of this event can be found at archive.org.
Up until this experience, I had for a long time been interested in listening to recorded sound but I never realized that recorded sound could sound as real as this.
There is more information including links to tape recordings of the event made by Ray Dashner and Bradd Schiffman.