Luciana Souza's well-received third record, Brazilian Duos, is a departure in two respects. First, the gifted vocalist is backed not by a jazz quartet, but rather by three different acoustic guitarists — Romero Lubambo, Marco Pereira (playing eight-string), and Walter Santos (her father). Second, Souza turns away from original material and toward classic Brazilian songs by figures like Dori Caymmi, Luiz Gonzaga, Djavan, Jobim, Toninho Horta, and her parents, Walter Santos and Tereza Souza. The range of moods is astounding, from the tongue-twisting virtuosity of the opening "Baião Medley" and the playfulness of "O Bolo" to the heartbreaking strains of "Pra Dizer Adeus," "Docemente," and "Suas Mãos." Souza's voice, poised and attractive enough on its own, becomes a thing of transcendent beauty when matched with these sparse yet vibrant accompaniments.