The latest volume in an ongoing series by an acclaimed Bach specialist on the modern piano.With recordings of the French Suites, Partitas and Goldberg Variations on Piano Classics, the Chinese pianist Yuan Sheng has placed himself among the most searching of present-day Bach pianists. As Jed Distler remarked in Gramophone, reviewing the Goldbergs, 'Yuan Sheng's disciplined, scrupulously terraced style often reflects his mentor Rosalyn Tureck.'In a new and illuminating booklet essay for this album, the musicologist and pianist Raymond Erickson remarks that the 15 two-part Inventions and the 15 three-part Sinfonias played an important role in Bach's teaching. These pieces, although today mainly associated with basic piano training, are not at all easy and in fact are sophisticated, small-scale masterpieces. 'They were not composed simply to provide technical training in keyboard playing but, perhaps more important, to teach keyboard players how to compose.'In 1720 Bach's oldest son Wilhelm Friedemann (1710-84) was already of an age appropriate for introducing him into the family trade of musician. So Bach started for him a music notebook a Clavierbuchlein which included these Inventions and Sinfonias. Bach revised them shortly before moving to Leipzig in the spring of 1720, to take up his new post as Thomaskantor, and copied them out with a preface. In learning and playing these works, Bach affirmed, a diligent student would be taught 'a clear manner for playing not only in two voices but also in three obbligato parts and, furthermore, not only how to invent good musical ideas [inventiones] but also how to develop these well. And above all, how to achieve a cantabile manner of playing, and additionally to obtain a strong foretaste of Composition.'So it is that the Inventions and Sinfonias have given much pleasure to both performers and listeners throughout the subseque