Singer, songwriter, and activist Amy Ray broke through to mainstream success in the late '80s as one-half of the acclaimed folk-rock duo Indigo Girls, whose self-titled sophomore album earned them a Grammy Award in 1990. With their defiant messages of LGBTQ rights, environmentalism, and feminism, and their willingness to take on a variety of other challenging social and political issues, Ray and her musical partner, Emily Saliers, became one of the most enduring female acts of the '90s, weaving activism with art and building a large and deeply devoted fan base that continued t...