O My God, I'm so happy right now XD!
Check it out here please http://www.youtube.com/watch?v=KvsQXIogdyg (at 6:23)
and here http://www.youtube.com/watch?v=Z8vIrv6c3Lw (at 4:04. She starts singing a line from Little Mermaid's "Part of Your World".. a favorite of mine as well).
In the first video she actually sings a little piece of the "Enter Sandman" refrain!
I couldn't belive it, she's utterly awesome. I love her so much.
Please marry me, Utada XD.