Analysis Summary:

The article is mostly accurate, focusing on Michael Tilson Thomas's career and recent health challenges. The key claims about his career and illness are supported by available sources. There's a slight positive slant towards Thomas, typical of biographical pieces.

Detailed Analysis:

• Claim:** "For more than half a century, conductor-composer Michael Tilson Thomas has graced the stages of concert halls with a swashbuckling style." This is a general statement about his career length and style. Verification Source #1, Verification Source #2, and Verification Source #4 all support his long and successful career. The "swashbuckling style" is subjective but consistent with his reputation.
• Claim:** "Earlier this year, Thomas led the San Francisco Symphony in his last scheduled conducting performance due to the return of his glioblastoma – an aggressive brain tumor." This statement about his health and last performance is likely accurate, although the specific timing ("earlier this year") would require more current sources to confirm the exact year. Verification Source #1 mentions his health issues and role with the San Francisco Symphony.
• Claim:** "He talks with "60 Minutes" correspondent Lesley Stahl about how he was changed by conducting for the first time in junior high school, and about living a life in the arts." This claim is about the content of the "60 Minutes" interview, which is the primary source. The claim is plausible and consistent with the overall narrative. Verification Source #2 mentions a PBS documentary about his life and career, which indirectly supports the claim about his life in the arts.
• Claim:** "Artistic Director Laureate of the New World Symphony" Verification Source #1 supports this claim.
• Claim:** "Music Director Laureate of the San Francisco Symphony" Verification Source #1 supports this claim.

Supporting Evidence/Contradictions:

• Verification Source #1: Confirms his roles as Artistic Director Laureate of the New World Symphony and Music Director Laureate of the San Francisco Symphony.
• Verification Source #2: Supports the claim about his life and career being documented.
• Verification Source #3 and Verification Source #5: Show his connection to Leonard Bernstein.
• Verification Source #4: Supports his role as Music Director.
• No contradictions were found in the provided sources.