“Mahler and his ‘Tragic,’” by Jay Nordlinger

“Mahler and his ‘Tragic,’” by Jay Nordlinger

Last night, the Philadelphia Orchestra played the Symphony No. 6 in A minor of Gustav Mahler. The venue: Carnegie Hall. The conductor: Yannick Nézet-Séguin, who is the orchestra’s music director, as well as the music director of the Metropolitan Opera. What a double-job. Maestro Nézet-Séguin has far surpassed Noah (the tennis star of the ’80s) as the world’s most celebrated Yannick. The Mahler Sixth takes about an hour and twenty minutes to play…