Charles-Marie WIDOR

First German edition, in part original, of this work devoted to one of Albert Schweitzer's intellectual guides, Johann Sebastian Bach, which he began in 1903 at the age of 28, at the suggestion of the preface's author, his organ professor Charles-Marie Widor. The first edition was published in 1905 in French with 455 pages. The First German edition, recognized by several scholars as constituting an entirely new work, considerably different from the previous edition, appeared in 1908 with 844 pages.