Metallica Tribute to Michael Tilson Thomas: MTT Dead at 81

Metallica’s Lars Ulrich and James Hetfield join Michael Tilson Thomas (center) on stage at Chase Center, San Francisco, March 18, 2019. Photo credit: Gabrielle Lurie / San Francisco Chronicle via Getty Images

Metallica Tribute to Michael Tilson Thomas: The Full Story

Michael Tilson Thomas died on Wednesday, April 22, 2026, at his home in San Francisco.

He was 81 years old.

His publicist, Constance Shuman, confirmed the cause of death as complications from glioblastoma multiforme – a rare and aggressive form of brain cancer.

MTT had disclosed the diagnosis publicly in 2021, which came as a shock to both the classical music world and to the rock fans who had found him through S&M2.

The following day, April 23, Metallica posted a formal tribute on their official website and across social media.

The statement was short, measured, and personal.

What Happened and Why It Matters

Thomas served as music director of the San Francisco Symphony for 25 years.

His tenure was defined by innovation, risk-taking, and a genuine drive to connect classical music to new audiences.

He accumulated 12 Grammy Awards across a career that spanned six decades.

He was also a pianist, composer, and educator – not simply a man who stood on a podium and waved a baton.

For rock fans, his significance is rooted in S&M2 – the 20th anniversary follow-up to Metallica’s original 1999 collaboration with the Symphony.

S&M2 was co-conducted by MTT and Edwin Outwater – and Thomas supplied the artistic authority that made the whole thing work at that scale.

For more on where Metallica stand as a live act right now, read our detailed Metallica tour report.

Metallica’s Full Statement

Metallica released their statement via social media and their official site on April 23, 2026.

Here is what the band said, in their own words:

“It is with great sadness that we learned of the passing of legendary conductor Michael Tilson Thomas. A towering figure in classical music, many of you became familiar with the man known as MTT when he worked with us as a major driving force in the development and live performances of the S&M2 shows in San Francisco in September of 2019.”

“MTT was more than a conductor; an accomplished pianist and composer, he served as the San Francisco Symphony’s musical director for 25 years. During his time with the orchestra, he brought innovation, experimentation, and community engagement to San Francisco. He fostered contemporary music by forming relationships with living composers and creating fresh accounts of standard repertory. Throughout his career, he earned 12 Grammy Awards.”

“We cherished our time with MTT and learned so much working with him to prepare the S&M2 performances; it was a very high honor to have him on the podium for our shows. He will be sorely missed.”

Lars Ulrich had described MTT as “the maestro, the elder statesman of his world” – a conductor who encouraged fans to understand where symphonic and rock music overlap.

James Hetfield, reflecting on the collaboration at the time, called it “a beautiful opportunity” and said the band was “super proud that after 38 years, there’s still cool things on the horizon.”

Fan Reactions and Music World Response

The response from both the rock and classical music worlds was immediate.

Metallica fans who had only encountered MTT through S&M2 responded with genuine grief.

For many, those 2019 concerts were the first time classical music had felt viscerally exciting – and MTT was central to why.

Classical music circles mourned a conductor who had championed living composers and pushed his institution to take creative risks few symphony directors would dare.

The broad outpouring underscores how rare MTT truly was – a figure revered by both the symphony hall crowd and the arena rock audience simultaneously.

The S&M2 Story: How MTT and Metallica Connected

Metallica’s relationship with the San Francisco Symphony began in 1999 – four years after Thomas became the Symphony’s music director.

That first pairing produced the live album S&M – a genuine landmark in classic rock news at the time.

A heavy metal band and a major symphony orchestra sharing the same stage, with zero compromise on either side.

Twenty years later, Metallica returned for S&M2 at the brand-new Chase Center on September 6 and 8, 2019.

MTT was largely retired by that point – yet he came back specifically for this project.

He co-conducted alongside Edwin Outwater, handling the symphonic passages with the authority that only a 25-year music director of a major American orchestra could bring.

The three-hour concerts included deep cuts like “The Outlaw Torn” and “The Call of Ktulu” alongside the hits that 18,000 fans per night were expecting.

It stands as one of the most extraordinary live events in heavy metal history.

To understand how Metallica became the kind of band that could pull that off, read our look at their pivotal 1991 interview on thrash metal and the Black Album.

What This Means Going Forward

Metallica remain one of the most active live bands on the planet.

They recently announced a 24-date residency at the Las Vegas Sphere – one of the most technologically advanced concert venues ever built.

They also added a No Repeat Weekend at Mohegan Sun Arena in Connecticut on November 19 and 21, marking their 25th anniversary.

Check Metallica’s official tour page for the most current schedule.

MTT’s death inevitably raises the question of whether a third S&M collaboration could ever happen.

The honest answer is that no one who could fill his role at that level is easily found.

He was not just a collaborator – he was a validator, a bridge-builder, a man whose presence told the classical world that what Metallica were doing deserved serious attention.

Metallica’s Legacy and What’s Ahead

Metallica have spent more than four decades building a catalog that has outlasted trends, label politics, and lineup changes.

They are one of the best-selling music acts of all time – with more than 125 million records sold worldwide.

Their willingness to attempt projects like S&M and S&M2 speaks directly to who they are: artists who have never been satisfied with just playing it safe.

Their Hampton show in 2025 – covered in our Metallica Hamptons set list report – proved they can deliver at any scale, from 500 fans to 18,000.

MTT was part of the story that proves Metallica belong in any room, on any stage, with any collaborator willing to meet them at their level.

While you’re here, explore the histories of members of Black Sabbath and members of Deep Purple – two bands whose DNA runs directly through what Metallica built.

Your Questions About MTT and Metallica Answered