Bach Society. The phenomenal cellist Yo-Yo Ma is soloist with the Bach Society Orchestra this Saturday. Promises to be another Bach Soc packed performance at Sanders. Get the tickets early.

Venice. The golden age of music in Venice is played by the Aeolian Consort. Good for a Sunday diversion after a long walk to Dunster.

Choir. The University Choir gave a spectacular performance of the Bach Cantata No. 131 last Sunday. The Motet they will sing this Sunday afternoon should be very good. The Motets are to singers what string quartets are to violinists: a form more easily appreciated by performers than by listeners. Just a warning to those who might expect to hear in the motet the more varied timbres of a cantata orchestration. --Kenneth Hoffman

DUNSTER LIBRARY

Sonatas for cello and piano by Beethoven and Francoeur (1698-1787). Free. Friday, March 8, 5:30 p.m.

SANDERS THEATER

Bach Society Orchestra. Bach: Suite No. 4; Haydn: Symphony No. 99, Sinfonie Concertante, Cello Concerto in D (Yo-Yo Ma, soloist). Seats: $95. Saturday, March 9, 8:30 p.m.

SANDERS THEATER

Joseph Silverstein, volinist, Anton Kuerti, pianist. Works of Schubert, Liszt, Bach, Franck. Tickets $3-$5 ($1 student discount). Benefit for the rebuilding of the Bach Mai Hospital. Sunday, March 10, 2 p.m. Call 492-0489 for information.

DUNSTER LIBRARY

The Aeolian Consort. Music of Venice and San Marco. Free. Sunday, March 10, 3 p.m.

MEMORIAL CHURCH

Harvard University Choir. A special Lenten service. Bach: Motet No. 5; Purcell: Evening Service music. Free. Sunday, March 10, 4 p.m.