Imagine that you're a superstar recording artist. You've already made millions off your own music and from other famous artists covering your songs. Then imagine that the King of Rock & Roll himself loves one of your songs so much, he wants to cover it.

Then think if there would be any reason you might have to say no to Elvis Presley.

That's just what Dolly Parton told CNBC she decided to do, which was one of her first 'really hard business decisions.' Watch the video above to see why Dolly turned Elvis down.

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