So far, we know of two notable cameos in Paul Feig’s Ghostbusters: Dan Aykroyd and Bill Murray, two of the four original Ghostbusters stars — though they won’t be reprising their classic roles in the new film. The latest word from the set reveals another major cameo in the upcoming film: rock legend Ozzy Osbourne.

The news broke over at the Boston Herald, which reports that the rock icon filmed a scene set during a heavy metal music festival. An earlier draft of the script reportedly had this particular scene taking place during a large, Comic-Con-esque convention. Feig shot the new scene at the Citi Wang Theatre, where Osbourne was the headliner of the fictional “Rock Revenge Fest,” featuring a “12 hour marathon of metal.”

Although Feig has been pretty transparent about production on set, he hasn’t posted a photo of Osbourne or anything related to this particular sequence…yet.

Ghostbusters centers on Erin Gilbert (Kristen Wiig) and Abby Yates (Melissa McCarthy), two women who write a book positing the real existence of ghosts. A few years later, Erin has landed a prestigious teaching position at Columbia, when her book comes back to haunt her — disgraced, she reunites with Abby and, along with Jillian Holtzmann (Kate McKinnon) and Patty Tolan (Leslie Jones), the ladies team up to take down a ghastly threat.

The film also stars Chris Hemsworth, Cecily Strong, Michael K. Williams, Andy Garcia, Neil Casey and Matt Walsh, and hits theaters on July 15, 2016.

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