explores Mendelssohn’s precocity, his musical impressions of British culture, the role of the visual in his music, his compositional response to Bach’s St. Matthew Passion, and incomplete drafts from his musical estate of three instrumental works. In addition, a group of three essays focuses on the music of Mendelssohn’s sister Fanny Hensel, perhaps the most gifted woman composer of the century, and a significant, complex figure in the formation of the Mendelssohnian style.