“Not only were she and I part of the magical family of Fleetwood Mac, to me Christine was a musical comrade, a friend, a soul mate, a sister," he wrote.

In a tweet, Nicks called her fellow Fleetwood Mac musician, who died Wednesday, her “best friend in the whole world since the first day of 1975.”

The musician's family called her "an incredible human being."

Tune in as Caitlyn Becker breaks down the top trending HuffPost stories of the morning. Blurred Lines' Emily Ratajkowski Named Esquire's Woman Of The Year; Chris Brown Arrested For Felony Assault; Julianne Hough Apologizes For Offensive Costume.

Nathan Apodaca rode to fame in 2020 by casually singing a Fleetwood Mac song while drinking cranberry juice and longboarding,

"The Late Show" host addressed the president's Electoral College defeat with a rock 'n' roll zinger.