Ahmir "Questlove" Thompson (center) appears with The Roots members Frank Knuckles (left) and Tariq "Black Thought" Trotter during the first episode of The Tonight Show Starring Jimmy Fallon. Lloyd Bishop/NBC hide caption

itoggle caption Lloyd Bishop/NBC

?uestlove and The Roots play backing band to Elvis Costello on the new collaborative album Wise Up Ghost. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Elvis Costello and The Roots' new album, Wise Up Ghost, comes out Sept. 17. Danny Clinch/Courtesy of the artist hide caption

itoggle caption Danny Clinch/Courtesy of the artist

Ahmir "Questlove" Thompson also teaches a class at New York University called "Topics in Recorded Music: Classic Albums." Ben Watts/Courtesy of the artist hide caption

itoggle caption Ben Watts/Courtesy of the artist

"Let's be real. We're all geeks in this room." ?uestlove, of The Roots, addresses the EMP Pop Conference on Sunday. At this moment, the drummer, producer and DJ was demonstrating the delighted confusion he tries to instigate on the dancefloor, which is why he spent years searching for the Spanish-language version of Kool and the Gang's "Celebration." Michael Weintrob hide caption

itoggle caption Michael Weintrob

Founded by Ahmir "?uestlove" Thompson and Tariq "Black Thought" Trotter, The Roots have now been performing for more than two decades. The hip-hop group's latest album is undun. Chago Akii-bua/Courtesy of the artist hide caption

itoggle caption Chago Akii-bua/Courtesy of the artist