Karl Dan Sorensen is a superb singer of the Evangelist role in the Bach St. John Passion. He has already been applauded for this week's performance during rehearsal by the members of the Collegium Musicum. Definitely a promising evening.

The Bach Society is remaining true to its original purpose: baroque chamber music. A lot of good soloists (some local, some imported) for the orchestra's fifth concert of the season. A Bach and Handel program.

With a lot of chamber music on this weekend, Arlene and Robert Portney should be among the most exciting--Sunday evening at Quincy. Kenneth Hoffman

ELIOT LIBRARY

Art Wilmarth, pianist, in recital. Works of Schumann, Debussy, Chopin. Free. Friday, April 12, 8:30 p.m.

LOWELL JCR

Indian Hill Trio. Trios and sonatas for clarinet, cello, and piano. Works of Beethoven, Brahms, Schumann. Free. Friday, April 12, 8:30 p.m.

CABOT LIVING ROOM

Twentieth-century music for flute, oboe, and piano. Free. Friday, April 12, 8:30 p.m.

SANDERS THEATER

H-R Collegium Musicum. Bach: St. John Passion. Tickets: $5-$2. Friday, April 12, 9 p.m.

CURRIER SCR

Jay Gottlieb and Ernest Lubin, duo-pianists. Works of Ravel, Busoni, Liszt, and Schubert: Grand Duo. Free. Saturday, April 13, 8:30 p.m.

ELIOT LIBRARY

Vivan Taylor, pianist, in recital. Works of Schoenberg, Ives, Rachmaninoff, Scriabin, Liszt. Free. Saturday, April 13, 8:30 p.m.