Gal Costa has an almost frightening range as a singer. She's got a clarion call of a voice that could carry across the sertão unamplified, but she can also croon a jazz number like you're the only person in the room. Her sense of timing is impeccable—her voice is literally a rhythm instrument—and she brings exhilarating energy to every genre, be it jazz, baião, folk rock, Tropicália or psych.