Taylor Swift and Stevie Nicks of Fleetwood Mac share a 15-year friendship filled with mentorship, Grammy performances, and music collaborations.

Due to a recent rash of high-profile celebrity deaths, including Ozzy Osbourne, Hulk Hogan, and the drowning of Malcolm-Jamal Warner, frantic fans mistook the rescheduling of the 77-year-old Rhiannon ...