Wealthy art collector Curtis O. Baer, who died in 1976, collected drawings by different artists, from a range of countries and periods. His collection is still regarded as one of the finest private collections in the United States, and 100 works are on view at the National Gallery's "Master Drawings From Titian to Picasso: The Curtis O. Baer Collection." The show runs through Oct. 6. CLASSICAL MUSIC

The most auspicious classical music event of the week would seem to be the National Symphony's concert tonight at Wolf Trap, under music director Mstislav Rostropovich. It is a preview of the NSO's upcoming month-long tour of Europe. The program: Makris' "Chromatokinesis," Debussy's "La Mer" and Prokofiev's Fifth Symphony. DANCE

American Ballet Theatre is at Wolf Trap this week, with a repertory program Monday and Tuesday nights, followed by five performances of "Giselle" starting Wednesday evening, to which the "Kingdom of the Shades" scene from "La Bayadere" will be added for the Friday and Saturday evening performances. FILM

Thursday at 8 in the Carmichael Auditorium, the Resident Associates Program at the Smithsonian will screen the Taviani Brothers' "Allonsanfan." Call 357-3030 for details.

Tonight and tomorrow at the Circle, "Gone With the Wind." Who cares if it's on videocassette?

Among current releases, Shohei Imamura's "Vengeance Is Mine," a film that sits at the border between inspiration and lunacy. POP MUSIC

The Steel Pulse/Afrika Bambaataa concert at the Convention Center on Tuesday marks the first Washington meeting between reggae and rap, though they are street-smart musics rooted in parallel black experiences of Jamaica and New York.

Two heralded bands occupy the stage at Constitution Hall on consecutive nights: England's Squeeze, newly reconstituted after a two-year hiatus, performs with the Hooters on Wednesday, while Georgia's R.E.M., a long-time critical favorite finally beginning to reach a wider audience, comes in on Thursday.

Luther Vandross, the most vibrant and inventive male soul singer of the past decade, has apparently put together a stage show that perfectly frames his majestic performance; he'll bring it to the Capital Centre on Saturday, along with Jesse Johnson's Revue and Ready for the World. THEATER

When actor Jason Robards and director Jose Quintero teamed up in 1956 in Eugene O'Neill's "The Iceman Cometh," they made theatrical history. They are likely to do it all over again in the towering revival currently being presented by the American National Theater (in the Eisenhower Theater). The play, nearly five hours long, is a devastating look at a barful of derelicts and the traveling salesman (Robards) who would strip them of their life-sustaining pipe dreams.