Beyoncé's new album, Cowboy Carter, is already out in some parts of the world, so the featured artists on the album have now been revealed.The 27-track project includes several interludes, which see guest stars serving as DJs on a fictional radio station called KNTRY. Country icon Dolly Parton is included on an interlude called "Dolly P," and she introduces Bey's version of her classic song "Jolene" -- for which Beyoncé has changed the lyrics. She also briefly appears in the intro of the song "Tyrant."Fellow country legend Willie Nelson is featured on two interludes: "Smoke Hour Willie Nelson" and "Smoke Hour II."