The Kirkland House sonata program on Friday night has outstanding professional musicians from Marlboro and elsewhere. Two of them are recent Harvard grads: James Buswell '70 and Seth Carlin '69.

Marie-Claire Alain returns to Harvard to play the Fisk organ at Memorial Church. She is one of the world's great organists and will be worth hearing.

Also Friday night is the Collegium Musicum with a diverse program: Renaissance motets followed by one of the magnificent Bruckner masses.

Paul Rosenbloom does course work for his independent study in grand style: a full performance of two Mozart piano concerti. Conducted by David Evans, the only person at Harvard besides Gerry Moshell with a private string orchestra. DUNSTER HOUSE LIBRARY. Chamber music of Debussy: Trio for flute, viola and harp; Schubert; Stravinsky. Free. Friday, November 30, 5:30 p.m.

ELIOT HOUSE JCR. Sonatas by Vivaldi, Brahms, Debussy, Bach. Ray Loring, flute; Carol Suchalter, piano. Free. Friday. November 30, 8:30 p.m.

KIRKLAND HOUSE. Sonatas by Brahms, Hindemith, Chopin. James Buswell, violin; Marcus Thompson, viola; Madeline Foley, cello; Seth Carlin, piano. Tickets: $.99. Friday, November 30, 8:30 p.m.

MEMORIAL CHURCH. Marie-Claire Alan, organist, in recital. Works of Bach, Guilain, Jehan Alain. Free. Friday, November 30, 8:30 p.m.

SANDERS THEATER. Harvard-Radcliffe Collegium Musicum, F. John Adams, conductor. Music of the Renaissance and of Bruckner. Tickets: $3-$1.50. Friday, November 30, 8:30 p.m.

KRESGE AUDITORIUM (MIT). MIT schola Cantorum. Monteverdi: Messa a 4 Voca da Cappella; Lasso: Prophetiae Sybyllarum. Tickets: $2. Sunday, December 2, 8:00 p.m.

HOLMES HALL. Radcliffe Chamber Orchestra, David Evans, conductor. Mozart: Piano Concertos K. 271 and K. 295 (Paul Rosenbloom, soloist). Free. sunday, December 2, 8:30 p.m.

DUNSTER HOUSE LIBRARY. Joseph Payne, harpsichordist, playing Bach: French Suite in C, and selections from the WTC. Free, Thursday, December 5, midnight.