Nancy Josephson, a New York City native born in 1955, gave up a career as a musician to create art that embodies Haitian themes. A spiritual follower of Vodou, Josephson traveled to Haiti a dozen times in the past decade to prepare for her initiation as a Vodou priestess. LaSiren, who embodies the ocean's dual qualities of strength and serenity, is her "met tet," or "head" spirit.