Kid Cudi performed on Late Night with Jimmy Fallon on Wednesday with special guests St. Vincent and Cage to perform the song “Maniac” from his upcoming (it comes out on Tuesday) album, Man on the Moon II: The Legend of Mr. Rager. The Roots backed up the trio on their traditional instruments as well as additional percussion from an iPhone.  Also, Zach Galifiniakis makes an appearance.Check out the video below:

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