In a mockery of all we hold meaningful and valuable, P.D.Q. Bach will be in Sanders on Saturday directing the HU Concert Band in his Serenoodie for Northerly Winds and Percussion. His live appearances are rare, particularly in this area, so don't miss your big chance.

Sanders will host another contemporary work on Monday when the Fromm Foundation presents Roger Sessions' When Lilacs Last in the Dooryard Bloom'd.

Tonight:

Thomas Mann and His "Good Scores"; a lecture by Michael Steinberg; Quincy Dining Room; 8:30 p.m.

Friday:

Works of Bach, Bruch, and Franck; Robert Portney, violin, and Arlene Portney, piano; Kirkland JCR; 8:30 p.m.

Works of Bach, Haydn, Chopin, Prokofieff, Debussy; Daniel Gorgoglione, piano; Currier JCR; 8:30 p.m.

Works of Corelli, Scarlatti, Telemann, Handel; Heidi Peterson, recorder, Larry Phillips, harpaichord; Dunstar Libray; 5:30 p.m.

Works of Bach, Debussy, Faure, Hindemith, Ibert, and Poulenc; Marna Kennedy, flute, William Merril, piano; Eliot Library; 8:30 p.m.

Saturday:

A selection of secular places from the Renaissance to the present, including the American premiere of Clytemnestra's Argument by Elizabeth Gomm; Radcliffe Choral Society; Paine Hall; 8:00 p.m.

Contemporary Songs of loneliness and love; Mark Ammons and David Booth, guitars, David Danner, bass, and George Stetten, piano; Dunster Library; 5:30 p.m.

Works of Mozart, Messiaen, Brahms, and Schubert; Nancy Young, flute, Michael Friedmann, piano; Eliot Library, 8:30 p.m.

Serenoodle for Northerly Winds and Percussion by P.D.Q. Bach, and works by Ives Schoenberg, Gabrielli Grainger, and Catel; HU Concert Band; Sanders; 8:30 p.m.

Sunday:

Gospel Music; The New Down Choir, Michael Harris, director; Mather Dining Hall; 2:00 p.m.

Works of Beethoven, Bartok, Schubert, Catherine Kautsky, piano; Holmes Living Room; 8:30 p.m.

Schubert; Dio Schone Mullerin; David Ripley, bass, William McClelland, piano; Adams LCR; 4:00 p.m.

Works of Schumann, Poulenc, Dahl, and Davidoski, Margo Wyckoff, flutist; Leverett JCR; 3:00 p.m.

Works of Back and Handel; The New Collegium Linoleum, David Schulenberg, conductor; Dunster Library; 3:00 p.m.

Monday:

When Lilacs Last in the Dooryard Bloom'd by Roger Sessions; the HU Choir among others; Sanders; 8:30 p.m.

Works of Bach, Mozart, Beethoven, and David Alpern, Leslie Amper, piano, Jennifer Congleton, viola, Richard MacDowell, Clarinet; Winthrop JCR; 7:30 p.m.

Wednesday:

The Boston Premiere of a newly discovered Brahma Cello Sonata; Norman Fischer, cello, Joan Fischer, piano; Adams LCR; 8:30 p.m.