Is this similar to the Happiest Celebration on Earth two disc CD with the blue cover?
Yes, but all of the "vintage" classic Epcot tracks on that edition have been replaced by the newer, current tracks, never before available on CD*. Also, the Sonny Eclipse track, the "Now Is the Time" CoP track, the Cinderella Surprise track, Digging In Dinoland, and the original version of the Tiki Room theme song is absent as well. Tree Of Life One is missing on the new version, but is still in print on the "Music From Animal Kingdom" CD.
So, here is what has been added on Four Parks, One World to replace these tracks:
"All Aboard the Mine Train" (1:45) - area music for Big Thunder Mountain Railroad
"Galactic Anthem" (2:06) from Stitch's Great Escape
"Legacy" (1:43) - Epcot entrance area music
"Spaceship Earth" (10:52) - long score track from current version
"Energy Adventure Medley" (4:48) - Bruce Broughton score from current version
"The Seas With Nemo and Friends" (4:44) - score from attraction plus "Big Blue World" song
"One Little Spark" (2:09) - current version of song
"Honey I Shrunk The Audience Theme" (1:47) - Bruce Broughton score that plays before the film starts and in preshow area
"Canada (You're A Lifetime Journey)" (5:50) - current version of the song with score buildup
"Reflections Of China Suite" (4:04) - highlights of the wonderful Richard Bellis film score (mainly the bits also used for load and unload, with a few others)
"Three Caballeros" (1:26) - the finale of the Gran Fiesta Tour attraction, with vocals just as heard in the ride
"Lights, Motors, Action" (11:12) - pretty much a complete soundtrack of all the music heard in the action sequences
"CTX Theme" (6:14) - instrumental piece heard in the round queue area before enering Dinosaur preshow
*This process of removing the old tracks from the "Happiest Celebration On Earth" version for the newer ones began with the "Where Magic Lives" version of the Official Album, which was released between "Happiest Celebration On Earth" and "Four Parks One World". The "Where Magic Lives" Edition included some (but not all) of the new tracks I listed above, was missing all of the same tracks from "Happiest" listed above except it still included "Tree Of Life One", and included two tracks that remain exclusive to that edition - "Welcome To Tomorrowland" TL area music, and "Old Betsy" instead of "All Aboard the Mine Train" for Big Thunder area music.