My Chemical Romance producer Doug McKean "unexpectedly" died. He was 54. 

An official obituary (via Loudwire) recently confirmed McKean's death, saying that the engineer and music producer died on June 29.

The same statement disclosed that he died of a brain hemorrhage.

According to the Headway, The Brain Injury Association, it occurs when there is bleeding in or around the brain due to a ruptured aneurysm or blow to the head. It remains unknown what led McKean to suffer from it.

My Chemical Romance shared a black and white photo of him on Instagram, paying tribute to their long-time collaborator.

"My Chemical Romance lost Doug McKean, a dear friend, a collaborator, a partner, a brother, a problem-solver, a genius, an integral part of our music. Doug was someone who made us laugh, made us better, understood, and always came to the rescue. He is deeply missed. He always will be," the band said.

Doug McKean's Life, Career

In the years before his death, McKean played a huge role in the biggest rock albums, including the works by My Chemical Romance.

He started his career through Reel Hits Recording Studio before launching his music career with Jerry Harrison, Chris Franz, and Tina Weymouth.

In 2001, McKean expanded his career in Los Angeles and began working with producer Rob Cavallo. Among their collaborative projects include Green Day's "American Idiot" and Dave Matthews Band's "Big Whisky & the GrooGrux King."

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His name also appeared in the works by Goo Goo Dolls, Phil Collins, Less Than Jake, Jewel, Shinedown, Paramore, Avril Lavigne, Adelitas Way, Jack's Mannequin, Weezer, Live, Sum 41, Simple Plan, and Meat Loaf, to name a few.

Meanwhile, his relationship with My Chemical Romance started when he engineered the band's hit album, "Welcome to the Black Parade" in 2006. In 2010, he recurred his role in "Danger Days: The True Lives Of The Fabulous Killjoys."

McKean lent his talent for the last time when he worked on My Chemical Romance's comeback single "The Foundations Of Decay."

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