Johann Gottfried Walther (1684-1748) was a German composer, organist, and music theorist, primarily associated with the Baroque genre. A contemporary of Johann Sebastian Bach, Walther is best known for his work as an organist and for his contributions to music theory. His most notable work is the "Musicalisches Lexicon" (1732), an early music dictionary that provided insights into musical terminology and practices of the time. Walther composed a variety of works, including organ music, sacred compositions, and instrumental pieces, though many of his compositions have not survived. His "Gottfried Walther's Clavier-Übung," which includes a collection of keyboard works, showcases his skill in counterpoint and ornamentation typical of the Baroque style. Walther's impact on music lies in his role as a bridge between the earlier Baroque and the later developments of the Classical era. His lexicon remains an important reference for music scholars and historians, highlighting the theoretical underpinnings of his time. Furthermore, his relationship with Bach and the musical culture of Weimar situates him as a significant figure in the development of organ music and music education in the 18th century.