Warren Haynes, Grace Potter and Rolling Stones saxophonist Bobby Keys will perform at this Friday’s HeadCount benefit. As previously reported, the September 7 event will take place at Port Chester, NY’s recently reopened Capitol Theatre. The three musicians will join a lineup that already includes The Roots and Bob Weir. Additional guests are expected.

Roots drummer Questlove was spotted at the venue’s grand reopening performance by Bob Dylan last night. Haynes is already confirmed to perform at the venue on October 11 and 12. Weir, Haynes and Potter are all longtime HeadCount supporters. The Roots joined the organization in more recent years. 