The Voice Alicia Keys sings as Gwen Stefani, Adele and Janis Joplin on 'The Tonight Show' 03/01/2017 Alicia Keys did her best impression of other musical superstars Tuesday. Read More RELATED NEWS Gwen Stefani confirms Las Vegas residency: "It's happening!"Gwen Stefani and her kids spend spring break in OklahomaGwen Stefani attends Jennifer Lopez's show in Las Vegas TAGS: Christina Aguilera Alicia Keys Demi Lovato Britney Spears Gwen Stefani Ariana Grande Janis Joplin Elvis Presley Jimmy Fallon Celine Dion Adele Alessia Cara The Tonight Show
