Smash: Katharine McPhee – Listen to “20th Century Fox Mambo” – (Audio) 02/10/2012 mj santilli American Idol, Katharine McPhee, Smash 13 Listen to a full stream of Smash star, Katharine McPhee singing “20th Century Fox Mambo” from next week’s episode. Katharine will sing and dance full on Marilyn Monroe, so you don’t want to miss that. Also, don’t miss costar Megan Hilty covering Carrie Underwood’s “Crazy Dreams”! Listen to Katharine McPhee sing “2oth Century Fox Mambo” from “Smash” Katharine McPhee