SAN FRANCISCO (Diya TV) — Michael Tilson Thomas, a leading American conductor who shaped classical music for more than five decades, has died at age 81. He died on Wednesday at his home in San Francisco, according to his spokesperson. Tilson Thomas, widely known as MTT, led major orchestras in the United States and Europe. He also composed, taught, and mentored young musicians. His work helped bring classical music to wider audiences.

Michael Tilson Thomas was born Dec. 21, 1944, in Los Angeles. He grew up in a family deeply involved in the arts. His father worked in theater and film production. His grandparents were stars of American Yiddish theater. He began playing piano at a young age. He later studied at the University of Southern California. During his early years, he worked with top composers such as Igor Stravinsky and Aaron Copland. He also learned from conductor Leonard Bernstein, who praised his talent early on.

Tilson Thomas started his professional career quickly. In 1969, he became an assistant conductor at the Boston Symphony Orchestra. That same year, he made a breakthrough debut in New York when he replaced an ill conductor mid-concert. Critics praised his confidence and skill.

Tilson Thomas went on to lead several major orchestras. He served as music director of the Buffalo Philharmonic from 1971 to 1979. He later worked with the Los Angeles Philharmonic and became principal conductor of the London Symphony Orchestra from 1988 to 1995. In 1987, he co-founded the New World Symphony in Miami. The program trained young musicians and helped launch many careers. He remained a guiding force there for decades.

His longest and most important role came in San Francisco. He served as music director of the San Francisco Symphony from 1995 to 2020. During his 25-year tenure, he helped transform the orchestra into a world-class ensemble. He also expanded his reach through tours, recordings, and media projects. His “Keeping Score” series introduced classical music to new audiences on television and radio.

Tilson Thomas received 39 Grammy Award nominations and won 12. His recordings and performances earned praise around the world. In 2019, he received a Kennedy Center Honor for his lifetime achievements. He also composed original works. His pieces included “Grace,” “Four Preludes on Playthings of the Wind,” and “Meditations on Rilke.” His music reflected his wide interests and deep knowledge of the art form.

In 2021, Tilson Thomas announced he had undergone surgery for a brain tumor. He later revealed he was battling glioblastoma, an aggressive cancer. Despite his illness, he returned to conducting. In February 2025, he said the tumor had returned. He conducted his final concert with the San Francisco Symphony in April 2025. The performance marked a belated celebration of his 80th birthday. In a statement at the time, he reflected on his life using musical terms. He described his final chapter as a “coda,” a closing passage in a composition.

Tilson Thomas shared a long partnership with Joshua Robison, an educator and arts manager. The two met as children and became partners in 1976. They married in 2014. Robison died earlier this year. Colleagues and musicians remembered Tilson Thomas for his energy, curiosity, and leadership. He pushed orchestras to explore new music while honoring classic works. He also supported young artists and helped them grow.