Alicia Keys and Kendrick Lamar joined forces to perform their new collaboration "It's On Again" on The Tonight Show With Jimmy Fallon. This is the first time the song has been performed on television, and it was done so with the contribution of composer Hans Zimmer. Notable absences from the performance include Pharrell, who produced the song, and The Roots. "It's On Again" appears on the soundtrack for The Amazing Spider-Man 2.
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