Michael Tilson Thomas died at his San Francisco home on April 23, 2026, aged 81, after a battle with glioblastoma, his publicist confirmed. The conductor had disclosed the brain tumor in 2021 and continued to lead performances worldwide despite cancellations. Artists from Carnegie Hall to London hailed his fearless interpretations.

During a 25‑year tenure as music director of the San Francisco Symphony, Thomas introduced a model of collegial music‑making, adventurous programming and community outreach. He premiered works by Lou Harrison, championed living composers such as John Adams, and launched the orchestra’s own label, SFS Media. A 2021 recording of his song cycles earned a Grammy for best classical compendium.

Beyond the podium, Thomas taught at the San Francisco Conservatory, produced award‑winning educational videos and hosted the 2020 American Masters profile, reinforcing his reputation as the most effective public educator since Leonard Bernstein. His innovative concerts and recordings generated sustained ticket demand and streaming revenue for the symphony, and attracted new donors to the orchestra's endowment, underscoring the commercial value of artistic risk‑taking.