A detailed analysis of Bach´s 48 Preludes and Fugues. The object of the present analysis is to place in the hands of students a detailed and exhaustive scheme of every Prelude and Fugue. In the Preludes the mode of procedure has been: 1) To give the figure upon which each Prelude is built; 2) To give the Prelude itself in full and copiously marked, or in a reduced form showing the structure; 3) a ´Summary´ of the piece; and lastly, general ´remarks´ upon the structure and treatment of the materials. For the Fugues a Tabulated Analysis – bar by bar – is first given, then a ´summary´ and ´remarks´ as before.