Sylvia Herscher, a legit agent, publisher and general manager, died Dec. 29 at her New York City home. She was 91.

Herscher received a special Tony Award in 2000 for being a matchmaker, mediator and all-around supporter of musical-theater creatives for five decades.

Born Sylvia Kossovsky in New York City, she started her career in the theater as Jule Styne’s secretary and worked with him on his musical “Hazel Flagg” in 1953. Two years later, she was associate producer on Styne’s production of “Will Success Spoil Rock Hunter?” General manager credits followed on “My Wonderful,” “Say, Darling” and “First Impressions.”

In 1960 she became a William Morris agent, and in 1966 she switched theater careers again to work at Edwin H. Morris, where she published the scores of “Mame,” “Mack and Mabel,” “Applause,” “Grease,” “Shenandoah” and “A Chorus Line.” She later worked for another music publisher, G. Schirmer.

Despite her official retirement in 1982, she continued to play musical matchmaker, introducing book writers, lyricists and composers to each other over the next 20 years.

Herscher is survived by her children, David, Leonard, Miriam and Elaine. Her husband, Seymour Herscher, died in 1994.