Ahmir Khalib Thompson, known professionally as ? Uestlove or Questlove, is an American drummer, multi-instrumentalist, DJ, music journalist, and record producer. He is best known as the drummer and joint frontman for the Grammy Award-winning band The Roots, serving since February 17, 2014, as the in-house band for The Tonight Show Starring Jimmy Fallon, the same role he and the band served during the entire 969-episode run of Late Night with Jimmy Fallon.
He has produced for artists including Elvis Costello, Common, D'Angelo, Jill Scott, Erykah Badu, Bilal, Jay-Z, Nikka Costa, and more recently, Al Green, Amy Winehouse, and John Legend. He is a member of the production teams the Soulquarians, The Randy Watson Experience, The Soultronics, and The Grand Wizzards.