Revealing mistake: In the close-ups of the elves during the Coronation Ball, you can see the fishing wire used to attach their wings to their backs.
Revealing mistake: In the close-ups of the Queen as she dies, you can see the line of her wig on her forehead.
Answer: They're both hearing things that they miss. Tony misses being back in his own world, so he hears a song that he knows from there. Virginia hears a wolf howling because she misses Wolf.