Bach. Listeners who favor the "purist" approach to Bach will do well to hear Lenora Stein's all-Bach program at Memorial Church. The Fisk organ is well-suited to such an enterprise.

Marta Dabezies is an excellent pianist. She has been in a number of solo and orchestral performances during her undergraduate days and since. Another good program in the Holmes Concert Series.

The Fromm Foundation supports what the majority of the musical world ignores: new music. A rare chance to hear contemporary string quartets this Sunday. --Kenneth Hoffman

DUNSTER LIBRARY

Stephen Drury, pianist, in recital. Beethoven piano sonatas Op. 57 (Apassionata), 109. Free. Friday, February 22, 5:30 p.m.

PEABODY SCHOOL (Linnaean St.)

Boston Summer Opera Theater presents Mozart's Abduction from the Seraglio. Tickets: $3. Thursday and Friday, February 21-22, 8:00 p.m.

MEMORIAL CHURCH

Lenora Stein, Assistant Organist at Harvard, in recital. All-Bach program. Free. Friday, February 22, 8:30 p.m.

DUNSTER LIBRARY.

The Never-Never Consort. Dufay: Laurentius Masil De Florentia; anonymous 13th and 14th century works. Free. Sunday, February 24, 3:00 p.m.

HOLMES HALL

Marta Debezies, piano, in recital. Works of Schumann, Debussy, Chopin, Brahms, Mozart, Free. Sunday, February 24, 8:30 p.m.

SANDERS THEATER

Composers String Quartet. The Fromm Foundation sponsors quartets by Schuller (1957), Shifrin (1972), and Ligeti (1968). Free. Sunday, February 24, 8:30 p.m.