A summer music season that will open June 5 with the Metropolitan Opera and end with a 60th birthday tribute to Leonard Bernstein on Aug. 25 was announced by Wolf Trap Farm Park resterday.

It will be first year that the National Symphony has moved its full summer schedule from the Kennedy Center. There will be 16 concerts, including four under music director Mstislav Rostropovinch, who will also participate in the Bernstein tribute.

The musical season also will include the world premiere of an opera by Washington composer-conductor Stephen Burton based on Webster's "The Duchess of Malfi," and Gildert and Sullivan's "The Gondoliers." The Wolf Trap Company will produce the works.

The schedule includes the laser show to music from "Star Wars" and "Close Encounters of the Third Kind" that recently drew crowds at the Hollywood Bowl.

This will be Wolf Trap's eighth season and the fifth successive one to present a week of opera by the Met.

The opening night work will be the Met's new production of Verdi's "Rigoletto." Cornell MacNeil will sing the title role, Judith Blegen will be Gilda and Neil Scicoff the Duke.

The other new production is Domizetti's "La Favorita." starring Shirley Verrett. The Met's production Mursorgsky's "Boris Godunov," which restores the composer's original text, will be performed for the first time here, with Jerome Hines in the title role.

Productions returning are "Madame Butterfly" with Gilda Cruzz-Romo as Cio-Cio Sen "Don Giovanni"; and a twin bill of "Cavallaria Rusticana" (with Tet'ana Troyanos) and "Pagliacci" (with James McCraken).

Soloist at the National Symphony concerts will include Van Cliburn, trumpet player Maurice Andre and vocalist Sarah Vaughn. In addition to Rostropovinch, the conductors will include Aaron Copland, Sarah Caldwell, Julius Rudel, Franz Allers, Henry Mancini, Rafael Fruhbeck de Purgos, Chriatian Badea and Arthur Fiedler. Rostroprovinch's programs include the Berlioz Requiem and Tchaikovsky's 1312 Overture complete with cannon,

Dance and popular music bookings are to be announced later.