** 1/2 J.S. BACH: Partita No. 3 in E, BWV 1006; Partita No. 2 in D minor, BWV 1004; Sonata No. 3 in C, BWV 1005. Hilary Hahn, violin. (Sony Classical)

Prodigious Bach playing from an early bloomer, Hahn’s performances emerge as verdant and natural as an unmown expanse of green lawn. The 17-year-old violinist seems incapable of producing an unmusical reading or of misspeaking the composer’s idiom. With time and repetition, her pristine playing may also blossom and mellow. For now, these performances resemble the blueprint of a room, handsomely designed yet incomplete, uncolored. Amid the virtues: An unfinicky literalness, a conversational continuity, a refreshing lack of self-dramatization. The weaknesses? Little accumulation of tension and emotion--as, for instance, in the great Chaconne, where the inner climaxes arrive too soon and to too-small effect. Albums are rated on a scale of one star (poor), two stars (fair), three stars (good) and four stars (excellent).