miranda otto's voice

I have to say that Miranda Otto's singing voice is one of the most beautiful voices I've ever heard, almost ethereal. I was absolutely amazed when I saw the campfire scene, she's obviously singing that herself in the scene, it blew me away. I know most actors are able to sing, dance, the whole nine yards, but has she ever done anything with singing? Her voice is perfect for celtic music. Please anyone let me know if she's ever released a music CD!