Bach Festival Chorus and Arcato Chamber Ensemble, James Turner, conductor, present Mozart's powerful Requiem, with soloists Kathryn Stieler, soprano, Phyllis Pancella, mezzo-soprano, Jeffrey Picon, tenor, and Nathaniel Olsen, baritone. The concert will also include Mozart's Eine kleine Nachtmusik (Serenade No. 13 for strings in G major).   Come early for a pre-concert talk by Dr. Zaide Pixley: 7:00 pm, Chenery Auditorium Reception Room.