Classical picks: Rattle re-redux; The Met does 'William Tell'

Reverberations of Rattle. If you didn't get a chance to hear Simon Rattle's recent Mahler in Philadelphia or at Carnegie Hall, pull up the Berlin Philharmonic's Digital Concert Hall and listen to his Mahler Symphony No. 7. The performance is captured with crystalline, close-up views of Rattle and the Philharmonic, and has a bonus interview in which Rattle discusses the work. www.digitalconcerthall.com/en/home

- Peter Dobrin

Philly at the Met. The Metropolitan Opera's eagerly awaited new production of Rossini's William Tell - an opera that's rarely done, even though the overture is everywhere - will be streamed on the company's website on opening night - Tuesday, with voices that attentive Philadelphia operagoers heard in their fledgling years. The cast is headed by Gerald Finley in the title role, but more crucial casting is tenor Bryan Hymel, heard here at Academy of Vocal Arts in years past. He's one of the few voices with the necessary high-range extension required by Rossini's vocal writing. Also in the cast is Curtis Institute graduate bass-baritone John Relyea. Note the early start time: 6:25 p.m. This opera is one of Rossini's longest (41/2 hours) and greatest. www.metopera.org

- David Patrick Stearns