D’Angelo performs during the Bonnaroo Music and Arts Festival in Manchester, Tenn., on Sunday. (Dave Martin/AP)

The set was billed as Questlove’s Superjam, with D’Angelo’s appearance coming as a surprise to the crowd assembled. The band played all cover songs, including the Beatles’s “She Came In Through the Bathroom Window.”

The Roots drummer told the Associated Press he asked his friend to the Tennessee farm in an attempt to get D’Angelo’s third album finally released.

“Me doing it wasn’t, like, running out of jam partners,” Questlove told the AP. “Me doing it was basically showing him, ‘Look, you are so missed you don’t even realize how much you are missed,’ hoping that this will be the adrenaline boost that will finally get him to turn his record in to the label. It’s done, it’s brilliant. I played on it. I know it’s brilliant. Now it’s just time to let his kids go and show it to the world.”

In an interview with GQ, his first in over a decade, D’Angelo said it would be “nice” to get the album out this year. He is set to tour Europe this summer and will appear at other U.S. music festivals, including “Budweiser Made America” in Philadelphia.

Watch part of the set below: