I was thinking maybe it was the song All Good Things Come to An End by Nelly Frutado. I don't know if that is how you spell her last name. But it does have whisteling in it and it is sung by a woman.
YES YES be asured you are right. It was called Beauty and the Best staring Linda Hamilton (the woman from the Terminator movies). The beast's name was Vincent but I don't know his real name....