You will find almost everything but horses and cattle in the Barns of Wolf Trap Foundation, which have their formal, paid-admission opening Tuesday with Stanley Silverman and Tina Howe's blend of music and drama, "The Columbine String Quartet Tonight!" In the next few weeks, that "almost everything" will range from a Kurosawa film festival (Jan. 22-24), to a puppet staging of Mozart's first opera, "Bastien und Bastienne," with Miran Kojian conducting and singers from last summer's Wolf Trap opera company. There will be a world premiere April 16: "Nightingale," a musical based on Hans Christian Andersen's story, with words and music by Charles Strouse, composer of "Annie," "Bye, Bye, Birdie" and "Charlie and Algernon." Lillian Gish will host a special showing of her silent film, "La Boheme," at a gala fund-raiser on Feb. 19, but that will only be the first silent film of the season; also on the agenda are "Phantom of the Opera" and "Peter Pan" for the weekend of March 12-14.

Most of the season will be devoted to music -- frequent concerts by the Wolf Trap Chamber Group under Earl Wild's direction and several programs by the Wolf Trap Chamber Players with Kojian conducting. There will also be jazz (including the Appalachian jazz string band, Trapezoid), a festival of piano music April 25-28, country and folk music, and a program of American songs by the inimitable Joan Morris and William Bolcom on March 20. In their centuries of existence, the two barns (an English one dating from about 1725 and a German one from about 1800) have certainly never seen as much action as they will witness in 1982.