Except for a short Foreword by the English musicologist, Walter Emery, this notable collection of Bach's chorales is an exact reprint of the 1929 edition. It contains over four hundred chorales with German and English texts, together with details regarding sources, dates, and authorship. There are eight appendices covering such matters as critical notes on the texts, metrical indexing of the tunes, a chronological table of the melodies, a classification of the hymns according to their seasonal use, and indices of composers, authors, and hymns. This collection is still the most complete available and although it was prepared with utmost care by one of the great Bach scholars of his day, the reprint does contain some errors because of historical information that has been added during the past thirty years. In his Foreword, Emery places this matter in its proper perspective:
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