Who sings this song at the beginning of this movie?!

I dont know why so many studios are starting to do this, but they are ignoring a lot of songs in the movie and not putting cetain songs in the soundtrack that are in the movie!.

Can someone please tell me the name of this song and who sings it, its a classic!.

http://www!.youtube!.com/watch!?v=UK6eG3oIg!.!.!.Www@Enter-QA@Com

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