In the spring of 1862, Lucy McKim, the nineteen-year-old daughter of a Philadelphia abolitionist Quaker family, traveled with her father to the Sea Islands of South Carolina to aid him in his efforts to organize humanitarian aid for thousands of newly freed slaves. During her stay she heard the singing of the slaves in their churches, as they rowed their boats from island to island, and as they worked and played. Already a skilled musician, she determined...