Photo by Seattle Refined

Macklemore and Ryan Lewis showed up Friday night at the opening of a new exhibit Seattle’s EMP Museum, treating fans to a surprise performance.

While the reaction during the show was mostly positive, BuzzFeed points out there have been some questions surrounding the disguise Macklemore wore, including a large prosthetic nose and a dark wig and beard.

Some users on Twitter declared the rapper was "dressed like a Jewish stereotype." While Macklemore hasn't responded to his critics, the costume was likely just a very unfortunate, very strange coincidence.

Update: Macklemore has responded to the criticism on Twitter: "A fake witches nose, wig, and beard = random costume. Not my idea of a stereotype of anybody."