CLASSICAL

THURSDAY, APRIL 21

The Metropolitan Opera in Boston opens its engagement this week, including a performance of Puccini's tragedy-opera "Tosca," first produced in 1900. Hynes Veterans Auditorium, 31 St. James Ave., Boston. For tickets and info: 482-2840

Brian Jones, organist, will perform in the Busch-Reisinger Museum as part of the Thursday Noon Recital series.

FRIDAY, APRIL 22

Dunster House Music Society presents pianist Stephen Drury in a performance of Cage, Chopin's Etudes, and Beethoven's Sonata pathetique. Dunster House Library. 5:30 pm. Free

The Marlboro Music Festival appears in a program of chamber music performed by violinst Young-Uck Kim, violinist Heeichiro Ohyama, cellist Timothy Eddy, and pianist Stephanie Brown. The "Music from Marlboro" concert includes Duo for Violin and Viola in B flat, K. 424, Mozart; String Trio in G major, Op. 9; and Piano Trio in F minor, Op. 65, Dvorak. Longy School of Music, 1 Follen St., Cambridge. 8:30 pm. $6, $3 with student ID

The Harvard-Radcliffe Orchestra's final performance of the season features Bach's Brandenburg Concerto No. 5, Piston's Flute Concerto, and Beethoven's Symphony No. 7. With James Yannatos, conductor and violinst, Doriot A Dwyer, flutist, and Luise Vosgerchian, pianist. Sanders Theater. 8:30 pm. $2, $1.50 for students and senior citizens. For info: 495-2663

David Evans will give a piano recital in the Holmes Hall Living Room. 8 pm

SATURDAY, APRIL 23

Music of Spain performed by the Liveoak Consort. Sunday April 24 at the Friends Meeting House, 5 Longfellow Park in Cambridge. 8:15 pm. Adults $2.50 and students $1.50.

The Metropolitan Opera in Boston presents Wagner's "Lohengrin" (1850). Hynes Veterans Auditorium, Boston For tickets and info: 482-2840

Tom Moore conducts an early music ensemble, performing works of Dunstable, Byrd and others. Holmes Hall Living Room at 8 pm.

SUNDAY, APRIL 24

The Madrigals of Concord and the Broad Cove Chorale of Hingham will perform music of Brahms, Schubert, Faure and American antiphonal works for women's voices. In the Fogg Art Museum Courtyard at 3 pm

Dragana Bajalovic plays piano works of Schumann, Webern, and Beethoven. Winthrop House Junior Common Room. 5 pm. Free

The Radcliffe Choral Society sings Victoria, Charpentier, Weeles, Chapman, and Donovan selections. St. Paul's Church, Bow and Arrow Sts. 8:30 pm. $2, $1 with student ID

The Waterfield Consort and Allen Hill, leader, perform in the Dunster House Music Society series. Schuetz and Schein: church music; Phalese: Dances; English fantasies and street cries. Dunster House Library. 3 pm. Free

Robart Moran's shadow puppet theater presents his "Through Cloud and Eclipse...," a "contemporary fairy tale." Puppeteer Moran, projectionist Donald Case, and pianist Joseph Kubera. Also Erik Satie's "Sports and Divertissements," for speaker and piano. Paine Hall, Music Building, 8 pm. Free

WEDNESDAY, APRIL 27

Allison Hall and Elizabeth Shreeve play Beethoven's Piano Sonata No. 14 and Schumann's "Kinderscenen" and Folk songs. Dunster House Library. 5:30 pm. Free