Piensa en Mí - Chavela Vargas

Agustín Lara's song is usually sung as a tender request. Chavela Vargas, with just guitar behind her, sings it slowly in a rough, worn voice that makes the plea sound desperate and the silences heavy. Her style, unpolished and fierce, is the opposite of the crooners on this list. Choose it to hear how stripping a bolero down can make it far more intense.