Stevie Nicks more or less defined “witchiness” within the context of popular music, to the extent where critics will sometimes use “witchy” as shorthand for “sounds like Stevie Nicks” (or sometimes “sounds like Kate Bush”). So it’s appropriate that Nicks showed up last night on our most prominent witch-related pop-culture institution last night. On last night’s episode of the FX series American Horror Story: Coven, Nicks played herself, but she played herself as a “white witch,” so she is very clearly in on it. It’s the first time Nicks has ever acted onscreen in her entire career, and you can watch her big entrance at Entertainment Weekly and musical performances at Vulture.