Listeners of America’s most popular classical-music radio program “Performance Today,” know Bruce Adolphe for his weekly Piano Puzzlers—arrangements of popular tunes in the styles of masters from Bach to Stravinsky. But how many fans who match wits with the wily star realize his stature as a serious classical composer? The world premiere of his choral requiem Memory Believes, written in honor of Adolphe’s brother Jonathan, a visual artist, anchors an afternoon of chamber music for the unusual combination of a string quartet and compact chorus. The time-stopping Cavatina from Beethoven’s String Quartet in B-flat, Op. 130, and Mozart’s quietly radiant “Ave Verum Corpus” sustain the spiritual tone. English madrigals in various moods round out the program. —Matthew Gurewitsch