Phoebe Bridgers made a surprise appearance on The Tonight Show Starring Jimmy Fallon yesterday. The singer-songwriter brought along a gaggle of kids and teen musicians, including a mini brass suite and backup singers, to give “Lost Boys” its TV debut. Watch them have the time of their lives below.

Bridgers is preparing to release Lost Weekend, her first solo album in six years, on August 14. “Lost Boys” came with a video starring Bridgers as an elf in a fantasy-historical reenactment. The studio version of the track features her Boygenius bandmates Julien Baker and Lucy Dacus, as well as Caroline Shaw, Alex G, Jack Antonoff, Bright Eyes’ Nate Walcott, and more.

Read Hattie Lindert’s live review Going Analog at Phoebe Bridgers’ Phones-Free MSG Show.