Summary: Cellist Alisa Weilerstein reflects on the dark language in Penderecki's gripping but accessible Second Cello Concerto; New York Philharmonic Program Annotator and Leonard Bernstein Scholar-in-Residence James M. Keller talks about J.S. Bach's buoyant Sixth Brandenburg Concerto; and Mark Travis looks at Beethoven's immortal Symphony No. 5, which the Philharmonic performed in its first concert, in 1842.
