Well I can't just choose one so let me make my top 5 list for you hehe sweatdrop
1.) Disney's "The Hunchback of Notre Dame" ( I mean this soundtrack is the best, to me, I think Disney did such a great job with this one, the lyrics are deep ( except the gargoyles song lol ) and it really goes well with the story ( this is my favorite story of all time ) and it's just so beautiful.)
2.) RENT ( my favorite musical ever3nodding)
3.) Rocky Horror Picture Show ( ninja hehe )
4.) Les Miserables ( of course, of course )
Good question. Some of my absolute favorite soundtracks are from, "The Neverending Story", "The Nightmare before Christmas", "Stargate", "Mulan", TLOTR trilogy plus "The Hobbit", "Cats Don't Dance"...just to name a few.