REMEMBER romance?

In an era when computer dating has replaced courtship, true love lingers on within Washington's concert halls . . . at least for a few days around the middle of February. Washingtonians will be able to hear a variety of love-oriented programs in honor of Valentine's Day. So if your true love is allergic to roses or chocolates, perhaps one of these programs will strike the proper note:

* In Concert: "Love Notes: A Musical Valentine" by Paul Hill's Washington Singers. Featured works in the program include 16th-century madrigals about love and despair, the entire second act of Johann Strauss Jr.'s "Die Fledermaus," Daniel Pinkham's "Wedding Cantata," and songs by Brahms, Schubert, Jerome Kern and Cole Porter. The climax of the program will be the Washington premiere of a choral cycle by American composer Dominick Argento titled "I Hate and I Love." 8 p.m., Monday, Feb. 14. Kennedy Center Terrace Theater.

* A "Varied View of Love: Romantic Songs for All Occasions." To celebrate Valentine's Day, baritone David Troup, soprano Dorothy Kingston and pianist Michael Patterson will present love songs from operettas by Sigmund Romberg and Victor Herbert, as well as opera arias and medleys from Broadway shows. 8 p.m., Feb. 15-17. Smithsonian, Barney Studio House.

* "A Baroque Valentine"--Folger Consort. These concerts are the first wholly Baroque program that the Consort has offered as part of its subscription series and will include French love songs, a quartet by Telemann, and a cantata by Rameau in which Cupid and his exploits figure prominently. Concerts are given in the Library's Great Hall on Saturday, Feb. 12, at 8:15 p.m.; on Sunday, Feb. 13, at 3 p.m. and 7 p.m.; and in the Elizabethan Theatre on Monday, Feb. 14, at 8 p.m.

* The King's Singers, a versatile sextet from England, in their first appearance at the Kennedy Center, give a benefit performance for the Alexandria Harmonizers, a close-harmony singing organization. Part of their program will be selected from the music of the Victorian era, including such songs as "Phyllis Is My Only Joy," "Goodnight Beloved," "Charm Me Asleep," "Come, My Sweet Marguerite" and "Light of My Soul." Monday, Feb. 14, at 8:30 p.m. in the Kennedy Center Concert Hall.

* The Kennedy Center has offered the Grand Foyer to the Alexandria Harmonizers (also referred to as "barbershoppers") to perform a free post-concert concert. It is scheduled for approximately 10:45 p.m., or whenever the King's Singers finish.

The King's Singers and the Alexandria Harmonizers both specialize in one of the more romantic genres of music: close-harmony male singing, a practice dating back to the Renaissance.

* McLean Chamber Orchestra, "Homage to Love and Lincoln," with champagne reception after the concert. The program pieces honoring Valentine's Day include a medley of love songs from "West Side Story" and Mozart's "Cosi fan tutte." Feb. 12 at 8 p.m., Alden Theatre of McLean, McLean Community Center, 1236 Ingleside Ave. Call 883-2152 for tickets.

* Beethoven Pops Concert, Beethoven Pops Orchestra under the direction of Richard Weilenmann. In honor of Valentine's Day the orchestra will perform a medley from "No, No, Nanette," including "I Want to Be Happy" and "Tea for Two." In addition, Argentinian pianist Alma Pecharsky will perform Beethoven's "Emperor" Concerto. 3 p.m., Feb. 13. Capital Hilton, the Presidential Ballroom. Tickets at the door--$5 for adults, children under 10 free.

But if you'd prefer to spend a romantic evening on the 14th without an audience, there's a way to bring the concert home. An ensemble from the Foundry Church Choir will sing a medley of love songs in your living room, and deliver a card and flower to your valentine. Its repertoire includes traditional love songs such as "It's Almost Like Being in Love" and "My Funny Valentine," but the group will take requests in advance. The charge is $18. Call Ken Yellis, 357-2920 (days), 532-1187 (nights), to make the arrangements.