Conductor George Manahan will remain a music director of the New York City Opera under incoming general manager Gerard Mortier, agreeing to a four-year contract through the 2011-12 season.

Manahan, 56, was hired as music director in 1996, effective with the 1997-98 season. In 2009-10, Mortier's first season, Manahan will conduct Stravinsky's "The Rake's Progress" and Britten's "Death in Venice." He is to conduct Szymanowski's "King Roger" in 2010-11, the company announced Tuesday.

"George is held in high esteem by the orchestra, singers and administration and gives me great confidence as I anticipate my inaugural season next year," Mortier said.