Keyboard artists in the time of J.S. Bach were simultaneously performers, composers, and improvisers. By the twentieth century, however, the art of improvisation was all but lost. Today, vanishingly few classically-trained musicians can improvise with fluent, stylistic integrity. Many now question the system of training that leaves players dependent upon the printed page, and would welcome a new approach to musicianship that would enable modern performers to recapture the remarkable creative fre...