LIVE: Australian singer Alex McQuarrie died on Friday night after being diagnosed with a rare form of cancer, the ABC reported.
He was 53.
The singer, whose real name is Anthony McQuarie, died at home after being treated in a Perth hospital for a condition that had not been reported.
The cause of death was undetermined.
His daughters, Stephanie and Olivia, released a statement on their website saying they were “devastated” by his death.
“We will miss you forever,” they said.
Alex was a former bassist for the country-pop group My Morning Jacket and the late rock band The Mamas and the Papas.
“Alex was one of the most gifted songwriters I have ever known and was deeply, deeply touched by the humanity of others and his music, especially his love for all life,” My Morning Jackets bandmate Jeff Buckley said in a statement.
The singer’s wife, Kristy, said he was an “intelligent and deeply loving man”.
“Alex’s passing has been a huge shock to our entire family, including our beloved father-in-law, Kristian,” she said.
“It is with great sadness that we share our deepest condolences to his family and loved ones at this difficult time.”
The singer and his wife had been married for nearly 30 years.
He also had two daughters, Olivia and Stephanie, and a son, Anthony.
“Our hearts go out to his wife and his daughters, and our thoughts and prayers are with them at this incredibly difficult time,” My Jacket bandmates Chris Stapleton and Matt Skiba said in the statement.
My Morning Jacket is due to release a new album in the next few weeks, the band said.