Back in April we got to see the Beastie Boys Rock & Roll Hall of Fame tribute that featured The Roots, Kid Rock and Travie McCoy. It turns out the whole performance was the brainchild of Questlove. In honor of MCA’s recent birthday (Aug. 5), Quest decided to liberate the demo he created as the reference for the tribute. The result is an incredible display of musicianship. Check it out below and click here to read what Questlove had to say about the process. Related: The lost Beastie Boys Chappelle Show performance (Video)