There will be rather little Mozart in the 2007 Mostly Mozart Festival, Jane Moss, the festival’s artistic director, announced yesterday. Instead, the festival will focus on Beethoven, Latin America, and sacred choral works. The Argentineborn composer Osvaldo Golijov will be Mostly Mozart’s first composer-in-residence. The festival will present two of his works, “Azul” and “La Pasión según San Marcos,” and Mr. Golijov will curate two programs of Latin- and South-American music.

Although several Mozart works will be performed, this year’s program marks the most extreme departure yet from the mission expressed in the festival’s name. “Mostly Mozart has changed dramatically over the last five years,” Ms. Moss said, joking that the staff counts the number of Mozart works each year to make sure it comes in at more than 50%. “We now really view Mostly Mozart as being inspired by Mozart and his Classical contemporaries and Baroque predecessors — not just by their music, but by the context in which it was received,” Ms. Moss said.

Mostly Mozart’s music director, Louis Langrée, said the festival’s goal is to re-create the sense of discovery that contemporary audiences felt when they heard Mozart’s or Beethoven’s works for the first time. In that spirit, Mr. Langrée will conduct a marathon concert August 4, based on the program of a historic 1808 concert during which Beethoven’s Fifth and Sixth Symphonies and his “Choral Fantasy” had their premieres, and the composer himself played the piano in his Piano Concerto No. 4 in G Major.

Other highlights include appearances by two of the world’s great choirs, the Swedish Radio Choir and the Schola Cantorum de Caracas; a reprise of the Mark Morris Dance Group’s “Mozart Dances,” commissioned for last year’s festival; and a multimedia installation on the exterior of Avery Fisher Hall by the OpenEnded Group.