“Of the many regrets and losses in the performing arts from the coronavirus, the San Francisco Symphony’s greatest is cancellation of the current season’s June finale, which was to celebrate Michael Tilson Thomas’s 25th and final year as music director,” writes Janos Gereben in Monday’s (5/11) San Francisco Classical Voice. “ ‘We are focusing our time and energy on developing and supporting new online content and experiences that … will celebrate the deep and lasting legacy of MTT’s vision and enthusiasm and extraordinary musical partnership with the orchestra and our community,’ said CEO Mark C. Hanson. The focus of the online substitute is a 25-day streaming program…. Details are still being worked out, and will be announced around the end of May…. While waiting for the ‘25 days/25 years’ project, there are many ways to follow MTT and listen to his work, beginning with his own website…. Thanks to the SF Symphony’s release for free streaming, MTT’s best work with SFS remains available online in the nine documentary-performance presentations of Keeping Score. They are described on MTT’s website as ‘Explorations into the stories behind the music, discoveries for all, insights for curious listeners, educators, students, and everyone in between.’ ”