THE GREATER the expectations of Washington's music lovers, the better the fast, it seems. And this summer is load with enough specials to [TEXT ILLEGIBLE] While there will be and it is free. A showcase for more than 700 talented, young - ages 13 to 25 - Americans, five outstanding youth orchestras from throughout the United States and two Washington-area youth orchestras will take part. Previously such groups have performed abroad, impressing Europeans conductors with their spirit and quality and their consistent ability to outclass their foreign competitors. Performing a major piano concerto with each of the visiting orchestras will be Lorin Hollander, the internationally known piano virtuose. The festival will end with a gala concert gathering some 200 players from the visiting orchestras under the [WORD ILLEGIBLE] of Walter Susskind.

Another Carter Barron and Washington - premiere will be having performances of the Pennsylvania Ballet, July 5 to 10. The ballet, considered one of the finest regional dance groups, will perform two programs. One includes the "Great Pas [WORD ILLEGIBLE] "Tchaikosysky Serenade," [WORD ILLEGIBLE] Allegros Brilante;" the other from Gentle Circles," Ray [WORDS ILLEGIBLE] " and "Concerto [WORDS ILLEGIBLE]

The Dance Theatre of Harlem will combine modern, classical and ethnic dances under the direction of Arthur Mitchell from July 19 to 24. A typical [WORD ILLEGIBLE] program might include five [WORD ILLEGIBLE] different pieces as: "The [WORDS ILLEGIBLE] by Greig, "Les Corsaires" [WORDS ILLEGIBLE] by Riccardo Drigo, " [WORDS ILLEGIBLE] by Santana, "Adagietto [WORDS ILLEGIBLE] by Geoffrey Holder.

The black version of "Guys and Dolls," with Barbara McNair, John Amos and Clifton Davis, is tentatively scheduled to run from August 23 to 28. Among the one-nighters are Donald Byrd and the Blackbirds, Melba Moore and Michael Henderson, Joe Cocker, Ramsey Lewis and Marlena Shaw, and Kenny Rankin.

One additional refinement at the amphitheater this year will be the appearance of a beer, wine and champagne concession. TIckets at Ticketron or through the Carter Barron box office, 829-3200.

Throughout the city and the summer there will be music in the [WORD ILLEGIBLE] much of it free - luxuriously free. You can dash off on a whim with a blanket to let the music dispel the heat. One disappointment to be suffered will be the absence of any Washington Cathedral programs - most of which [WORDS ILLEGIBLE] and usually free - owing to the cathedral's budget problems.

The Shrine of the Immaculate Conception will hold its eleventh annual series of Sunday evening organ recitals from June 5 through August 28 at 7 p.m., as played by guest recitalists. Carillon recitals at 6:15 are by carilloneur Robert Grogan.

Two special shrine dates are July 12 and August 6. On the first, at 8 p.m., the exquisite St. Hallvard Boys' Choir of Oslo will sing, and on the second, at 2:30 p.m., there will be a duo organ recital. Robert Grogan and Gunther Kaunzinger will perform as part of the Third International Congress of Organists which convenes only every ten years.

The Watergate concerts at the Jefferson Memorial begin on June 7 with programs that include jazz, country, big band and pop tunes. All concerts begin at 8:30 p.m.; the players wear crisp summer dress uniforms. The Marines on Sundays, the Army on Tuesdays, the Navy on Thursdays and the Air Force on Fridays. Similar military concerts are offered week nights on the west steps of the Capitol.

The National Symphony will perform ten free concerts from August 24 through September 4. The ninety-seven-member symphony, elegant in white evening jackets, will play from a mobile music shell in parks throughout the city. Call dial-a-park for dates and locations.

Also free and at twilight will be the Smithsonian's Wednesday night big band productions by the Navy Commodores. They will be staged at the Mall entrance to the Museum of History and Technology for seven weeks, starting July 7. THe Smithsonian will also sponsor a Fourth of July fest starting at 11 a.m. on July 2 featuring several varieties of American music - barber shop quartets, marches, military drill, etc.

At the Kennedy Center, the National Symphony will begin six consecutive weekend performances starting July 15, all at 8:30 p.m. As National Symphony conductor Mstislav Rostropovich will be away, Washington will have a series of guest conductors - Max Rudolf, Eduardo Mata, Rapheal Fruhbeck de Burgos and Hiroyuki Iwaki, in order of their apperances.

The symphony's Beethoven Bonanza will mark the 150th year of the composer's death, and the orchestra will perform all five concerti during their opening two weekends, featuring pianist Rudolf Firkusny, plus the nine symphonies. The other weekends will include standard favorites. Call the Kennedy Center for tickets and schedule, 466-8500.

In Virginia, Wolf Trap's seventh twelve-week season will open on June 6 with what has become a tradition - a week's visit from the Metropolitan Opera. Opening with Verdi's Il Travatore (also showing on the 11th) there will be Puccini's La Boheme June 10, Tosca June 8 and Mozart's The Magic Flute as a Saturday matinee on June 11. Two of this season's new Met production will also be stage - Meyerbeer's Le Prophete on June 7 and Wagner's Lohengrin on June 9.

Wolf Trap will present three other operas this year: Humperdinck's enchanting Hansel and Gretel from June 13 to 16, and the new and spectacular presentation of Busoni's masterpiece, Doktor Faust , on August 5 and 7. The difficult production, which is to be conducted by American Cal Stewart Kellogg, will be expressed in multi-media techniques as conceived by Frank Corsaro and Ron Chase. The third opera is Cavalli's baroque L'Egisto , August 19 and 20, a rarity that has seldom been heard since the seventeenth century.

Wolf Trap in '77 brings more classical concerts than in the past, including three evenings of baroque music directed from the harpsichord by English conductor/harpsichordist/musicologist Raymond Leppard. On June 28 and 30 he will conduct the six Brandeburg Concerti - three each evening, plus one of Bach's cantatas. "Ich Habe Genug," will be sung by Richard Stilwell, and the "Peasant Cantata" will be sung by soprano Jane Bane and baritone Donald Gramm. Then on July 3, Leppard will direct the National Symphony in an evening of Handel.

Among the concerts will be Lehar's "Merry Widow" with Anna Moffo on August 6, and on August 14 Frederica von Stade and Richard Stilwell will perform a Mozart/Mahler program conducted by Julius Rudel. Two Mozart concert arias and Mahler's song-cycle, "Des Knaben Wunderhorn," will be sung.

The complete performance of Handel's "Messiah" on July 31, with the University of Maryland Chorus under the direction of Dr. Paul Traver will attempt to recreate the original conditions of the 1742 Dublin premiere.

The National Symphony will also play at Wolf Trap the evenings of June 29 and July 1, 7 and 8. The July 1 performance will feature Aaron Copland at the podium in a concert of his own work.

Among the chamber music and racital dates is the June 26 all-Beethoven program commemorating the 150th year of the composer's death. The Guarneri String Quartet will play three works from each of Beethoven's major creative periods, and the last of Beethoven's quartets. There will be a Chopin recital on August 4 and an evening of Flamenco with Carlos Montoya on July 28.

In a lighter vein, Gunther Schuller, with several New England Conservatory bands, offers a sampler of forty years of dance tunes June 19, and Tony Bennett and Count Basie and His Orchestra will play June 20-21.

Farther, but not too far, in the rolling Shenandoah Valley, the Shenandoah Valley Music Festival will run for three July weekends. The performances will present some of the United States' most promising young conductors and a mix of composers. There will be a Tchaikovsky spectacular on July 30 - the finale, of course, being the "1812 Overture" complete with cannons. On Sunday the 31st, Dr. Richard Lert, leader of the festival, will end an all-Beethoven performance by conducting the Third Symphony ("Eroica").

The Shenandoah Valley Music Festival is to be held in Orkney Springs, Virginia (Route 263), and the weekends included are July 16-17, 23-24 and 30-31. Write the Shenandoah Valley Music Festival at Box 12, Woodstock, Va. 22664, or call 703/459-3396.

To the north, Maryland's Summer Institute for the Creative and Performing Arts enters its second year with nine presentations Tuesday nights at 8:15 at the Tawes Theater on the University of Maryland campus in College Park. The New York Woodwind Quintet will play on June 14 and the Empire Brass Quintet on June 28. Elly Ameling, considered one of the world's greatest lieder singers will appear on July 5, and the "Irish version of Piaf," as Andy Warhol described Geraldine Fitzgerald, will hold forth on July 19. The University of Maryland Chorus and the Wolf Trap Orchestra will wrap up the free productions with an open rehearsal of Handel's "Messiah," with Paul Traver conducting this special in the Student Union Ballroom. While admission is free, a ticketed reservations system is offered. Call 454-5910 for details.

Also at the Tawes Fine Arts Center from July 31 to August 6 will be the International Piano Festival and Competition, featuring Aldo Ciccolini, Philippe Entremont, Rudolf Firkusny, Paul Jacobs, Hans Richter-Hasser, and Rosalyn Tureck. Tickets are $5 and $6.

Heading north, the Baltimore Symphony Orchestra meets us halfway, at the Merriweather Post Pavilion, Columbia, for four performances. Baltimore's Sergiu Commissiona will conduct Berlioz' "Requiem" on June 22, with the Baltimore Symphony Chorus and solo tenor John Alexander. Then on July 7, guest conductor John Heyman will lead the orchestra in a big band spectacular, followed by a Rodgers and Hammerstein night on July 22 with Andrew Schenck conducting. Their final Columbia performance will be a Ferranti and Teischer piano duo.

In Baltimore itself four performance of the Dominick Argento opera, The Voyage of Edgar Allan Poe , will be held in the port city where he did most of his writing. The joint undertaking by the Minnesota Opera Company, the Baltimore Symphony Orchestra and the Morgan State University Chorus will be presented at the Mechanic Theater June 6 through 11. Call 301/752-1407 for details.

This is but a sketch of the range of musical activities available this summer. Many schedules are still in the final stages, many dates are still unset, so check The Post's Friday Calender for up-to-the-minute programing.