Little could Mahler, a century gone from the modern world, have anticipated the horrific intrusion of an incessant cellphone ring near the end of his ethereal 90-minute masterpiece, the Ninth. The instrument rang untended across excruciating minutes Tuesday night at Lincoln Center from the pocket of a front-row listener, sending the audience, the New York Philharmonic players and the conductor Alan Gilbert into shock and dismay.

As the ringing (one connoisseur said it was the iPhone’s marimba signal) vied with the Adagio climax of bittersweet quietude, Mr. Gilbert had had enough. He stopped the orchestra and turned, one witness said, and sternly asked the offender: “Are you finished?” The rage in the hall was general, according to bloggers who were there. “Kick him out!” came a shout from one music lover. “A thousand dollar fine!” demanded another.

Mr. Gilbert, a native New Yorker certainly used to the world’s run of nuisance, was masterful by all accounts in having the man snuff the phone. “We’ll wait,” he said, asking warily in behalf of everyone: “Is it going to go off again?”

The conductor was rewarded with rousing applause even before he took up the Adagio once more, marimba-free. Just before the Ninth resumed, people in the audience bustled to check their own cellphones.