Lorraine Hunt Lieberson has been scantily represented on CD, and that makes this gorgeous, deeply felt release all the more valuable. Here she sings two Bach cantatas composed for solo voice. Her mezzo is not particularly heavy, but it can darken or lighten expressively, and she uses its dusky qualities handsomely. Ich habe genug was originally written for solo bass, but Bach revised it a few years later. The way the voice works with and around a solo oboe (amid the accompanying strings) is beautiful. Of particular note are the aria "Schlummert ein"--a lullaby which Lieberson sings with a long, sustained, hushed tone--and the final aria, in which the singer looks forward to her death and eternal peace; the latter is remarkable for its joyful, flowery vocal line, as upbeat as the lullaby is serene. Lieberson catches the mood, and her rhythmic accuracy, leaning on the beat, brings out the joy in the singer's religious fervor. The second cantata, similarly scored with a prominent solo oboe, begins with a recitative ("My heart swims in blood") and is a confession of guilt; by its close the tone has again turned vivacious, as the sinner looks forward to salvation. Lieberson's voice is capable of level upon level of dynamics, her soft singing is as impressive as her more outgoing expressions. This is a beautiful disc from an important singer. --Robert Levine