'Smash': Karen Has a New Fan (Exclusive Video)

"Smash's" Katharine McPhee

Uma Thurman's Rebecca Duvall is learning something that the rest of the Bombshell cast on NBC's Smash already knows: that Karen (Katharine McPhee) can bring it.

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The movie star who has been brought in to lift the troubled production starts to read the writing on the wall in Monday's episode, "Publicity," when Derek (Jack Davenport) informs her that Tom (Christian Borle) and Julia (Debra Messing) have written a new song -- and she won't be the one who performs it.

Instead, "Second Hand White Baby Grand" will be performed by Marilyn's "shadow selves" -- the voices the icon hears in her head during the production -- who will be taking on more of the internal songs, thus sparing the Bombshell from the screeching sounds emanating from Duvall's pipes.

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Worth noting: "Second Hand White Baby Grand" is based on a true story about Marilyn Monroe's relationship with her mother and named after a piano that the bombshell inherited from her mother (that Mariah Carey recently purchased in auction).

Cheek out the clip below, exclusive to The Hollywood Reporter, to see who suggests Karen perform the new track. What do you think adding "shadow" Marilyns means for Karen and Ivy (Megan Hilty)? Hit the comments with your thoughts. Smash airs Mondays at 10 p.m. on NBC.

Email: Lesley.Goldberg@thr.com; Twitter: @Snoodit