Sure, Twitter has issues. And then it has this: “At 58, [Karita] Mattila, who is currently onstage here at the Aix Festival in Weill and Brecht’s “Rise and Fall of the City of Mahagonny,” is having something of a late-career renaissance: a newly expanding repertoire and newfound celebrity on Twitter, where she is beloved by some of opera’s most ardent fans. And she loves them right back.” – The New York Times