Trey Anastasio, guitarist and vocalist of Phish Credit: Becky Frass
Phish guitarist and front man Trey Anastasio is famous for his improvisational prowess.Credit: Becky Frass

On Friday and Saturday, Phish played at Wrigley Field for the first time in the jam band’s three-decade career. The two sold-out concerts were packed with “phans.”

Freelance photographer Becky Frass was on hand to capture the joyous atmosphere; check out her photos in the slideshow below.