Book excerpt: Granddaughter of the philosopher Moses Mendelssohn and sister of the composer Felix Mendelssohn Bartholdy, Fanny Hensel (1805-1847) was an extraordinary musician who left well over four hundred compositions, most of which fell into oblivion until their rediscovery late in the twentieth century. In Fanny Hensel: The Other Mendelssohn, R. Larry Todd offers a compelling, authoritative account of Hensel's life and music, and her struggle to emerge as a publicly recognized composer.