Brie Larson will make her debut as host of "Saturday Night Live" on May 7. The Academy Award-winning actress ("Room") can be seen in the upcoming films "Kong: Skull Island" and "The Glass Castle." Joining Larson will be returning musical guest Alicia Keys. A 15-time Grammy Award-winning singer/songwriter/producer, Keys will debut her new single, "In Common," from her forthcoming album on "SNL." She'll also be joining season 11 of "The Voice" as a coach this fall.