One could say Martha Wainwright went into the family business when she became a singer and songwriter, but she has never had to rely on the reputations of her parents or siblings to earn acclaim for her brave, literate, and uncompromising work. Wainwright's music is rich, adventurous contemporary folk; there is an artful streak to her melodies that's evocative yet uncluttered, her lyrics offer a smart, unblinking look into her own life, and her vocals show her exploring the possibilities of her instrument with a bracing individuality and lack of pretense. She made an impressiv...