On the final night of this past weekend’s Wanee Festival at the beautiful Spirit of Suwanee Music Park, Bob Weir and the Campfire Band returned to the Peach Stage for a headlining performance–their second of the weekend. At his Campfire Band shows, Weir has made a habit of starting the show with a solo acoustic segment before inviting the band to join him for the rest of the performance. For his festival-closing set, Weir welcomed a very special second guest guitarist for the show’s acoustic portion–Phish frontman Trey Anastasio, who had just finished his own set with Trey Anastasio Band on the same stage.

The surprise collaboration sent the Wanee crowd–and, in turn, social media–into a frenzy. From the Grateful Dead‘s Fare Thee Well shows to Weir’s precedent-shattering sit-in with Phish in Nashville last Fall, when the worlds of Phish and the Dead collide, the fervent fans of both bands reliably respond with resounding enthusiasm. However, while the performance alone was enough to stoke the fires of excitement for fans, the main story of the acoustic duo set centered on an unlikely song choice: For the final song of the segment, the two jam band titans chose perform a cover “Million Reasons,” the worldwide hit 2016 single by pop mega-star Lady Gaga. You watch HD video of the re-worked cover below, courtesy of YouTube user Suwannee HD Streams:

While the worlds of Phish/The Grateful Dead and the world of contemporary pop music don’t often collide, word of the surprising cover made its way back to Gaga, who took to Twitter to profess her gratitude:

“LEGENDS coverin #MillionReasons wow! Trey & Bob I’m so honored this made my day such a dream come true!” read the grateful post. Lady Gaga has identified as a Deadhead before, as she explained on the Howard Stern show, which can be listened to below courtesy of ShaunAKABear.

While we don’t know whether or not Lady Gaga is a fan of Phish as well, she’s clearly familiar enough to know that either of the two guitarists covering her song–let alone them covering it together–is an enormous honor. Props to Gaga for giving love where love is due. You can listen to the original song below, via Lady Gaga VEVO:

To check out a complete setlist of the acoustic duo performance, and watch HD videos of each song, head here.

[h/t – Relix]