So I don't have lyrics from Disney's live-action movies, nor do I have lyrics from Disney's TV animation department movies (Duck Tales: Treasure of the Lost Lamp, A Goofy Movie), from their D2V animated movies (Return of Jafar, Beauty and the Beast: Enchanted Christmas, The Little Mermaid: Return to the Sea, Simba's Pride). I also don't have lyrics from non-Disney animated movies, such as Land Before Time, Quest for Camelot, Anastasia or El Dorado.
I have the lyrics of the following animated features:
Also have a look at the Disney Scripts page, because a full script of course always contains the full lyrics.
There are also lots of lyrics from Disney movies in Tim Montgomery's Disney Animation Archive.
If you are looking for general pop music lyrics, you could try searching the links on the Ultimate Bands List page.
For lyrics from other movies, check the Internet Movie DataBase, and check the fan pages.