Complex sentence: The Music of Disneyland, Walt Disney World and Epcot Center was the official album for Disneyland and Walt Disney World in 1988, later released as The Official Album of Disneyland/Walt Disney World in 1991.
Split into simpler sentences: The Music of Disneyland, Walt Disney World and Epcot Center was the official album for Disneyland and Walt Disney World in 1988. Later released as The Official Album of Disneyland/Walt Disney World in 1991.