A heartbroken Grace Slick has said goodbye to her Jefferson Airplane bandmate Paul Kantner.

Slick, the band’s iconic singer, updated her Facebook cover photo with a picture of a young Kantner, before posting a brief statement: “Rest in peace my friend. Love Grace.”

Kantner died Thursday of multiple organ failure, following a heart attack earlier in the week.

Kantner is the first of Jefferson Airplane’s founding members to have passed away.

He was also a founding member of the group’s spinoff band, Jefferson Starship.

He was inducted into the Rock and Roll Hall of Fame 1996 for his work with the group.

Slick fronted The Great Society, Jefferson Airplane, Jefferson Starship and Starship and had various solo stints.

Paul Kantner