The Roots drummer tweets some clues about the annual festival.

In a series of not-so-cryptic tweets, ?uestlove revealed the headliners for his band’s annual festival. Spin has done the legwork on this one, coming up with a list of performers that includes Grimes, the Gaslamp Killer, Solange, golden era revitalist Joey Bada$$, producer-turned-rapper Hit-Boy, blues guitarist Gary Clark Jr., jazz pianist Robert Glasper, and hipster-rap duo Macklemore and Ryan Lewis.

The only bit of information that Questo didn’t share was the date of the festival, which usually takes place during the first weekend of June in The Roots’ hometown of Philadelphia.