Tiera Kennedy is featured on Beyoncé's new album "Cowboy Carter." "I've always dreamed of collaborating with her, but never knew if that would actually happen because it's Beyoncé," Kennedy, 26, said during a follow-up call this week. AdvertisementHere's what Kennedy can say: She didn't know her contributions to "Blackbiird" and "Tyrant" had made the cut until the tracklist was unveiled online. Asked if coordinating four busy schedules posed any big challenges, Kennedy said simply: "When Beyoncé calls, you show up." At the time, Kennedy didn't know Cam had worked on the song, but now she sees it as the "cherry on top."

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Persons: Tiera Kennedy, Carter, Beyoncé, Kennedy, what's, —, didn't, I've, it's, hadn't, Tanner Adell, Brittney Spencer, Reyna Roberts, Paul McCartney, they've, Camaron Ochs, Cam, Taylor Swift's, Paul McCartney's Organizations: Service, Beatles, Big Locations: Beyoncé