MUSIC

Take your pick--choral, orchestral, recital or ensemble concerts this weekend? Keep these in mind: the Harvard-Radcliffe Collegium Musicum concert in its first performance of the year; the Bach Society concert featuring mezzo-soprano Mary Frances Lubahn, the lead in last spring's Ariadne, and Hugh Wolff playing Beethoven's 3rd; and Yo-Yo Ma's cello recitals at Kirkland and Adams Houses.