“The Routes of Slavery” is different in that it invites a more somber reflection on the centuries-old, centuries-long exploitation of African citizens. “Humanity is divided into two: Masters and Slaves” is the Aristotelian epigram, declaimed by Bakary Sangaré (known for his work with the Comédie-Française) before he begins the first in a series of recitations that remind us of the cold-blooded nature of the slave trade. To our ears, it’s an indictment; it was meant as a statement of facts, and it’s accompanied by the airy, emotionally indeterminate music of kora (a cross between harp and lute) and valiha (a cylindrical zither), from Mali and Madagascar, respectively.What follows is a series of musical selections interspersed with more readings. The formal tones of Mateo Flecha’s “La Negrina” gives way to the high-spirited “Gugurumbé,” creating the pattern that keeps the programming so compelling.


















