Michael Tilson Thomas dies at 81

The classical music world is mourning the loss of Michael Tilson Thomas, the affectionate 'bad boy' of the podium who led nearly every major orchestra in the U.S. and Europe.

Thomas died following a battle with a brain tumor, surrounded by family and close colleagues.

His half-century career was defined by a commitment to the American repertoire and the co-founding of the New World Symphony.

Tributes have poured in from fellow musicians and institutions, recognizing him as a sterling advocate for human creativity and artistic excellence.