Photo via “Kevin Browning”:https://twitter.com/Soundcaresser/status/211524397171867650/photo/1

Umphrey’s McGee performed a milestone set last night at Bonnaroo, with a marathon, late-night spectacle that spanned more than four hours when it was all said and done.

Shortly after 2 AM, the band members emerged onstage under a thick haze of day-glo fog, opening with the crunchy, psych-jam “Gurgle,” before launching into the fan favorite “40’s Theme.” These tunes largely set the tone for the evening, which relied heavily on the band’s metal-edged rockers like “Plunger,” “Miss Tinkle’s Overture,” and “Wizard Burial Ground.”

Midway through the set, the group revealed it’s “big gigantic surprise” by swapping out with (not surprisingly) Big Gigantic’s Jeremy Salken and Dominic Lalli during “Ringo” (which featured an extended sax solo from Lalli before the switch was complete), keeping fans dancing until Umphrey’s returned to the stage with a soaring version of “All In Time.”

As the sun came up over the festival grounds in the wee hours of Saturday morning, Umphrey’s greeted the dawn with a glorious, spaced-out jam following “Hajimemashite.” A cover of ACDC’s “Thunderstruck” rang out shortly after 5 AM, which held the energy intact until the very end.

As the show drew to a close, keyboardist Joel Cummins took to the mic to reveal the band’s plans to perform a four-night New Year’s Eve run at The Tabernacle in Atlanta, GA on December 28-31.