The musicians of the National Symphony Orchestra in Washington reached a deal with management for a new labor contract on Friday after a tense, short-lived strike threatened to disrupt the season.

Under the agreement, the players will receive a raise of 4 percent this season and another 4 percent increase in the 2025-26 season. They had previously rejected an offer of a 13 percent raise over four years.

In an escalation after months of labor talks, the musicians walked off the job on Friday for the first time since 1978. They picketed in red shirts outside the Kennedy Center, which oversees the ensemble, holding signs that said, “No pay, no play!” The strike lasted from about 11 a.m. until 2:30 p.m.

After the strike began, the National Symphony Orchestra’s managers said they would cancel the opening gala, a major fund-raising event scheduled for Saturday. But they reversed course once the deal was reached, saying the gala would go forward.

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Edgardo Malaga Jr., the president of the players’ union, Local 161-710 of the American Federation of Musicians, said the players were relieved by the agreement.

“The musicians are very happy,” he said. “We felt we were successful. We’ve got some good gains here that we can be proud of.”

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