Friedrich Wilhelm Marpurg (1718–1795) was one of the most influential German music theorists and critics of the Enlightenment, a man whose pen shaped the way an entire generation thought about music. Born on 21 November 1718 in the Altmark region of Brandenburg, he grew up in a cultivated environment that encouraged both intellectual and artistic pursuits. Although little is known about his formal musical training, his writings reveal a deep knowledge of philosophy, mathematics, and the arts—hallmarks of the Enlightenment spirit.

In 1746, Marpurg traveled to Paris as secretary to a Prussian general. This sojourn proved decisive: in the French capital he encountered some of the leading minds of the age, including Voltaire, d’Alembert, and the composer Jean-Philippe Rameau. Rameau’s harmonic theories left a lasting impression on him, and Marpurg would later become one of the principal figures responsible for introducing and adapting Rameau’s ideas to German readers.

Returning to Berlin, Marpurg established himself as a prolific writer and critic. He founded one of the earliest German music journals, Der kritische Musicus an der Spree (1749–1750), which set a new standard for public debate about music. His style was sharp, polemical, and often controversial, but it reflected his conviction that music was not merely an art of pleasure but also a field of intellectual inquiry.

Marpurg’s most celebrated theoretical work is the Abhandlung von der Fuge (Treatise on the Fugue, 1753–54), a monumental study that codified the principles of contrapuntal writing. At a time when fugue was beginning to be seen as an old-fashioned art, Marpurg defended its intellectual rigor and expressive power. His treatise not only preserved the legacy of J. S. Bach—whose Well-Tempered Clavier he cited extensively—but also provided a systematic framework for composers and students well into the 19th century.

Beyond the fugue, Marpurg wrote on a wide range of subjects: keyboard technique, figured bass, composition, and even the mathematics of music. His Kritische Briefe über die Tonkunst (Critical Letters on the Art of Music) offered lively essays on contemporary issues, while his Handbuch bey dem Generalbasse und der Composition (Manual of Thoroughbass and Composition) became a practical guide for aspiring musicians. He also contributed to the dissemination of Bach’s Art of Fugue, writing a preface that helped frame the work as a monument of contrapuntal art.

Marpurg was not only a theorist but also a composer. He wrote keyboard sonatas, songs, and sacred works, though these are less remembered today than his writings. His music reflects the Berlin school of the Lied, with its emphasis on clarity, simplicity, and expressive melody.

In his later years, Marpurg held administrative posts in the Prussian state service, which provided him with stability while he continued to publish. He remained active in Berlin’s intellectual circles until his death on 22 May 1795.