18th-century prints of Bach's four-part chorales
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In the period following Johann Sebastian Bach's death in 1750, apart from the publication of The Art of Fugue in the early 1750s, the only further publications prior to the 1790s were the settings of Bach's four-part chorales. In 1758 Friedrich Wilhelm Marpurg was the first to start preparing a published edition of Bach's four-part chorales, but in 1763 was prevented by royal duties. C. P. E. Bach, who owned the original manuscripts, then set about the same task, producing two volumes in 1765 and 1769. Dissatisfied with his publisher Friedrich Wilhelm Birnstiel, he surrendered the manuscript rights in 1771 to Johann Kirnberger and his patron Princess Anna Amalia of Prussia. From 1777 onwards, Kirnberger unsuccessfully made requests to Birnstiel and a new publisher, Johann Gottlob Immanuel Breitkopf, to publish the chorales. Following Kirnberger's death in 1783, C.P.E. Bach approached Breitkopf, who published them in four volumes between 1784 and 1787.
About half of the chorale harmonisations in this collection have their origin in other extant works by Bach.