Oscars 2014: Pink, U2, Pharrell Williams rocked the stage

Idina Menzel performs during the Oscars at the Dolby Theatre on Sunday. (AP)

Bette Midler performs on stage during the Oscars at the Dolby Theatre on Sunday in Los Angeles. (AP)

Pink performs during the Oscars at the Dolby Theatre. (AP)

Pink gave a tribute to 'The Wizard of Oz' at the 86th Academy Awards. (AP)

Bono of U2 performs during the Oscars at the Dolby Theatre on Sunday in Los Angeles. U2 performed on Ordinary Love from Mandela: Long Walk To Freedom (AP)

Bono of U2 gets on the floor while performing during the Oscars at the Dolby Theatre. (AP)

Karen O, left, and Ezra Koenig perform during the Oscars at the Dolby Theatre. (AP)

The Edge, from left, Bono, Larry Mullen, Jr. and Adam Clayton of U2 perform on stage during the Oscars at the Dolby Theatre in Los Angeles. (AP)

Pharrell Williams performs 'Happy' at the illuminated Oscars sttage. (AP)

Lupita Nyong'o, left, dances along with Pharrell Williams during his performance of 'Happy' at the Oscars. (AP)

Pharrell Williams, center, performs 'Happy' along with other artists. (AP)

Lupita Nyong'o, left, dances along with Pharrell Williams during his performance of 'Happy' at the Oscars. (AP)

Pharrell Williams, center, performs 'Happy' during the Oscars at the Dolby Theatre. (AP)