Megadeth frontman Dave Mustaine has opened up about his forthcoming memoir, In My Darkest Hour, revealing the profound physical and psychological toll of his 2019 cancer battle.
Scheduled for release on September 8, 2026, through Grand Central Publishing‘s Da Capo imprint, the autobiography focuses heavily on his grueling diagnosis and treatment regimen while simultaneously keeping the thrash metal pioneers’ creative wheels turning.
Speaking with Finland’s Chaoszine, the 64-year-old musician detailed the immense pressure of tracking Megadeth‘s sixteenth studio album, The Sick, The Dying…And The Dead!, while staring down a life-or-death medical crisis after being diagnosed with squamous cell carcinoma at the back of his tongue.
“The book is about my journey through cancer, having to make The Sick, The Dying…And The Dead! record at the same time. Because I was diagnosed right as we were starting the record, and you’re faced with a life-or-death battle, and I didn’t know how I was gonna come out, so I didn’t want to stop recording in case it was my last record, in case I died. So, yeah, that was a very intense time,” Mustaine stated.
Beyond the brutal physical hardship of oncology treatment, the legendary guitarist recalled the terrifying memory lapses brought on by his medical regimen. The severe cognitive fog, medically referred to as “chemo brain,” triggered deep-seated fears for the singer, especially given his family’s personal experience with neurodegenerative illness.
When asked if documenting the battle was exceptionally challenging, he explained:
“Well, some of it, it was difficult — not emotionally, but because I just had a hard time remembering a lot of the details. Chemotherapy has a terrible effect on your memory. It even actually has a name — the syndrome is called ‘chemo brain’. When I first went through all my treatment, I was having the hardest time remembering s**t, and it was really affecting me, because I had a mother-in-law that just passed away from Alzheimer’s. And I know that Alzheimer’s and dementia is rampant in the world right now, and I didn’t wanna go out that way. So, having issues with your memory, that’s scary stuff, man. Your voluntary muscles are one thing, but the involuntary muscles, like breathing — when you forget to breathe, you die.”
Ultimately, the founding member of Megadeth hopes the book serves a purpose far greater than a standard rock-and-roll biography, with the goal of offering solidarity to others facing similar life-altering diagnoses.
Discussing the perspective he took while penning the project, Mustaine concluded:
“It’s about me, the person, Dave. But the music part about it is such a critical part of who I am. It’s not what I am; it’s what I do. But, yeah, the book is about me, the person, and what it was like. It was tough. It was really tough. I don’t know if people are gonna get all choked up over it, but I hope that for some people that it gives them hope, people who may be diagnosed with that kind of illness. It always feels good to know that somebody else went through what you’re going through, and they were victorious.”
The autobiography will mark a prominent release for the newly revived Da Capo imprint, which specializes in music-focused literature. The brand name has a long history within the publishing industry, tracing back to Da Capo Press before undergoing multiple corporate restructurings and consolidations under the Hachette Book Group over the past decade.
Billed by the publishing house as a “powerful reflection on the harsh truths and raw realizations that can only come from confronting death,” the upcoming release promises to transcend the typical illness narrative. Providing a statement earlier this year, Dave Mustaine opened up about the profound physical and emotional toll of his battle and recovery.
“One of the most harrowing experiences of my adult life has been my seven-year journey through cancer treatment and onward into remission,” Mustaine said. “This story is considerably more than just, ‘Go to the doctor, get diagnosed, get treatment and hopefully I live happily ever after.’ This was a journey of me saving myself, staying alive, keeping my family together, and continuing to make music through it all.”
Speaking on the emotional depth of the forthcoming autobiography, Da Capo executive editor Ben Schafer praised the heavy metal pioneer’s willingness to bare his soul.
“’In My Darkest Hour‘ is Dave Mustaine at his most revealing, vulnerable, and true,” said Ben Schafer. “With lacerating honesty and soulful reflection, he speaks to the universal human experience of facing serious illness and how it changes a person, their family and friends, and one’s relationship with creativity.”
To properly document his extensive medical journey, the frontman re-teamed with established New York Times journalist Joe Layden. The pair previously worked together to co-author the musician’s 2010 release, “Mustaine: A Heavy Metal Memoir.” Adding to his extensive rock literature resume, Joe Layden is also known for collaborating with Kiss guitarist Ace Frehley on “No Regrets: A Rock ‘N’ Roll Memoir,” as well as penning “The Last Great Fight,” a deep dive into the legendary 1990 boxing match where James “Buster” Douglas scored a historic knockout victory over Mike Tyson.
According to promotional materials released by the imprint, the narrative provides an intimate look at how the singer managed to balance life-saving medical procedures with his unrelenting drive to create music. As noted by Da Capo, “In My Darkest Hour” “takes readers from the treatment room to the studio as Mustaine chronicles how his diagnosis inspired him to take up the pen and guitar pick, going from radiation and chemotherapy appointments straight into hours-long recording sessions, resulting in Megadeth’s sixteenth studio album, The Sick, The Dying…And The Dead!”
“For Mustaine, it was one more opportunity to fight like hell,” the synopsis reads. “Along the way, Mustaine details how confronting his own mortality brought him closer to his family, taught him how to ask for help, strengthened his faith, and challenged the vulnerability of his art.”
