What Epcot attraction used the same theme song as an attraction replaced in Disneyland by America Sings in 1974?
There's a Great Big Beautiful Tomorrow:  It was also used in one scene of the Epcot attraction Horizons. Walt Disney's Carousel of Progress:  It was replaced in Disneyland by America Sings in 1974, and reopened in its present home in Walt Disney World Resort's Magic Kingdom in 1975.
i don't know