Stevie Nicks has shared a moving handwritten letter to her late Fleetwood Mac bandmate, Christine McVie, following the musician's death.
On Wednesday (November 30), it was announced by the keyboardist's family on social media that McVie had died aged 79 after a "short illness".
In a touching tribute, the band's 74-year-old lead singer shared some heartfelt words about her "best friend in the whole world since the first day of 1975."
The singer wrote that she had not known her fellow band member was ill until Saturday night (November 26) and had wanted to visit her in London, England.
Read Nicks's tribute letter below:"A few hours ago I was told that my best friend in the whole world since the first day of 1975, had passed away," Nicks began in her heartfelt letter.
"I didn’t even know she was ill… until late Saturday night. I wanted to be in London, I wanted to get to London – but we were told to wait," she continued.
"So, since Saturday, one song has been swirling around my head, over and over and over. I thought I might possibly get to sing it to her, and so I’m singing it to her now. I always knew I would need these words one day… It’s all I can do now," she added.
That song, the musician explained, was Haim's 2019 track 'Hallelujah', which is about grieving the death of a close friend. She then shared some of the most poignant lyrics from the song.
"I had a best friend but she has come to pass, One I wish I could see now, You always remind me that memories will last, These arms reach out, You were there to protect me like a shield, Long hair running with me through the field, Everywhere you’ve been with me all along," she wrote.
Nicks then concluded: "See you on the other side, my love. Don’t forget me. Always, Stevie."
The group, which comprises McVie, Mick Fleetwood, John McVie, Lindsey Buckingham, and Nicks, was founded in London in 1967.
During their illustrious career, they sold more than 100 million records worldwide, making them one of the most successful rock bands ever, and were inducted into the Rock and Roll Hall of Fame back in 1999.
The late singer-songwriter penned 'Songbird' - one of the band’s most famous tracks - as well as 'Little Lies', 'You Make Loving Fun', and 'Oh Daddy'.
She left Fleetwood Mac after 28 years in 1998 but returned in 2014.
A statement from her family revealed that McVie died "after a short illness," adding: "She was in the company of her family."
"We kindly ask that you respect the family’s privacy at this extremely painful time, and we would like everyone to keep Christine in their hearts and remember the life of an incredible human being, and revered musician who was loved universally," they added.
The band also shared a joint tribute statement on social media memorializing McVie as "truly one-of-a-kind, special and talented beyond measure".
"There are no words to describe our sadness at the passing of Christine McVie. She was truly one-of-a-kind, special, and talented beyond measure. She was the best musician anyone could have in their band and the best friend anyone could have in their life," they continued.
"We were so lucky to have a life with her. Individually and together, we cherished Christine deeply and are thankful for the amazing memories we have. She will be so very missed," they added.
Meanwhile, band member Mick Fleetwood also shared his own statement on social media, writing: "This is a day where my dear sweet friend Christine McVie has taken to flight, and left us earthbound folks to listen with bated breath to the sounds of that Song Bird… reminding one and all that love is all around us to reach for and touch in this precious life that is gifted to us."
Our thoughts are with McVie's family, friends, and fans at this time.