Christine McVie, the British-born Fleetwood Mac vocalist, composer, and keyboardist whose calm, soulful contralto helped define songs such as “You Make Loving Fun,” “Everywhere,” and “Don’t Stop,” has passed away at the age of 79.

Wednesday, her death was confirmed via the band’s social media channels. Her family stated in an Instagram post that the singer passed away after a “short illness.”

“She was truly one-of-a-kind, special and talented beyond measure,” the band’s statement reads in part.

McVie was a consistent presence and personality in a band notorious for its numerous lineup changes and explosive personalities, including singer-songwriters Stevie Nicks and Lindsey Buckingham.

From 1975 through 1980, the band’s commercial heyday, it sold tens of millions of albums and converted emotional struggles into catchy, captivating music.

McVie was previously married to bassist John McVie, and their divorce, as well as that of Nicks and Buckingham, was notably recounted on the 1977 album “Rumours,” one of the best-selling records of all time.

Mick Fleetwood co-founded Fleetwood Mac in 1967; the band was inducted into the Rock and Roll Hall of Fame in 1998. Other big tracks by the trio include “Dreams,” “Go Your Own Way,” and “Little Lies.”