The New Orleans Jazz & Heritage Festival kicked back into gear on Thursday, opening the second weekend of this year’s 50th anniversary celebration with a number of surprise collaborations, including a headlining performance from Widespread Panic that included a sit in from NOLA legend George Porter Jr.

Just before Panic’s headlining set (which was originally set aside for The Rolling Stones debut at Jazz Fest before the band was forced to cancel their appearance), NOLA’s own Dumpstaphunk, led by Ivan Neville, took the stage for their main-stage set. The band welcomed both saxophonist Karl Denson as well as guitarist Brandon “Taz” Niederauer for a cover of the Stones’ “Can’t You Hear Me Knocking,” a nod to the would-be headliners. Dumpstaphunk bassist Nick Daniels also donned a tie-dyed Stones shirt for the occasion. Denson is a regular touring member of the legendary UK rockers, and Neville has played in guitarist Keith Richards’ solo outfit, The X-pensive Winos. Watch a video of the collaboration below.

Earlier in the day at the fairgrounds Mavis Staples punctuated her own performance with a sit in from Troy “Trombone Shorty” Andrews. George Wein, Jazz Fest’s founding producer, was also presented with the key to the city of New Orleans by mayor LaToya Cantrell.

Later in the evening on Thursday, Neville moved to Le Petit Theater for an intimate career retrospective performance that also saw the keyboardist receive the first-ever Songbook Award from 30Amp Circuit. Over at Preservation Hall, the storied venue’s namesake jazz band continued their annual Midnight Preserves series, which featured an appearance from My Morning Jacket guitarist Carl Broemel, along with his bandmate and bassist Tom Blankenship.