The Oscar Performers: Lady Gaga, Anna Kendrick, and More Are In

Adam Levine will be on hand to perform "Lost Stars" from Begin Again.

Rita Ora will be performing "Grateful" from Beyond the Lights.

John Legend and Common are pairing up to sing "Glory" from Selma.

Black, who fronts the band Tenacious D, will perform in "a very special sequence."

Into the Woods star Kendrick is confirmed to give a performance that show producers Craig Zadan and Neil Meron say could happen "only on the Oscars." We don't know what that means yet, but we're hoping for "On the Steps of the Palace."

Oscar winner Hudson will be a part of several music sequences during the show.

Lady Gaga will make a special tribute performance.

Tegan and Sara will reteam with The Lonely Island (Andy Samberg, Akiva Schaffer and Jorma Taccone) to sing their infectiously catchy song from The LEGO Movie, "Everything Is Awesome."

McGraw will be stepping in for Glen Campbell to sing his nominated song, "I'm Not Gonna Miss You," from Glen Campbell . . . I'll Be Me.