On May 12, 2024, Tilson Thomas was leading Mahler 3 with the LSO, mezzo-soprano Alice Coote, and the combined forces of the Tiffin Boys' Choir with the women of the London Symphony Chorus. As reported in The Telegraph, Tilson Thomas got up from the podium partway through and closed his score, "telling the audience cheerily they’d been listening to an extended warm-up." He appeared to think that the performance was a rehearsal.

Coote, as well as some of the players of the orchestra, then gently reminded Tilson Thomas of his surroundings, and after a short delay, Tilson Thomas regrouped and returned to conduct the work's final movement. The performance concluded with a standing ovation.

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