Throwback Thursday: Dolly Parton, Emmylou Harris and Linda Ronstadt

Dolly Parton, Emmylou Harris and Linda Ronstadt released two very well known albums, "Trio," a Grammy-winning album released in 1987 and 1998’s "Trio II."

Earlier this year, Dolly mentioned that there was a collection of unreleased recordings made during the two recording sessions will make up a third release for the three legends and that those sessions will include additional recordings that have never been heard by the public.

To celebrate the upcoming release, here's some vintage footage of Dolly, Emmylou and Linda singing "The Sweetest Gift."