The Last Dream - A Cinematic theme. Okie doke.
Goodbye - Said and painful - reminding me of Shostakovich. I wonder how/where you got the choral voices.
Kuke The Panda - Dragon Quest LET'S GOOOOO! I wonder what their moments would be the story you laid out!
After the rest of the OST:
All in all, a comfortable cinematic soundtrack with a lot of 20th century highs and lows. I'm sure there's a more specific inspiration happening here, but that's knowledge I don't have on hand. I can imagine a lot of scenes matching the shifts in music. Personally, I liked the front end of the OST better than the back end.