The contract was approved late Sunday afternoon, according to Shawn Sachs, a spokesman for the union representing the musicians. He declined to disclose any details of the approval.

Neither the union nor Radio City Entertainment has released details of the long-term deal, which was reached earlier this week with the help of a mediator and the encouragement of Mayor Michael Bloomberg.

The musicians performed on Friday for the first time since their Nov. 2 walkout. During the dispute, the show continued with recorded music backing the famed Rockettes.

Much of the contract dispute revolved around salary for members of the orchestra, which plays as many as six 90-minute shows a day at the height of the Christmas season.

Tickets for the "Christmas Spectacular," which is known around the world, run as high as $250.