Grateful Dead singer Donna Jean Godchaux-MacKay has died. She was 78.

Godchaux-MacKay died on Sunday at Alive Hospice in Nashville after a lengthy battle with cancer, her family confirmed Monday.

“She was a sweet and warmly beautiful spirit, and all those who knew her are united in loss,” the family said in a statement to Rolling Stone .

Donna Jean Godchaux. WireImage

Grateful Dead performing in 1970. Getty Images

“The family requests privacy at this time of grieving. In the words of Dead lyricist Robert Hunter, ‘May the four winds blow her safely home,'” the statement added.

Godchaux-MacKay was born on Aug. 22, 1947 in Florence, Alabama. She began her music career as a member of the band Southern Comfort.

As a session singer, Godchaux-MacKay sang backup on two Billboard Hot 100

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