Johannes Speth (c. 1660–1718) was a German composer and musician primarily known for his contributions to the early Baroque music scene. He is recognized for his work in the genre of sacred and instrumental music, particularly through his compositions for voice and ensemble. Speth served as a court musician in various capacities, notably in the service of Duke Johann Ernst of Saxe-Weimar. One of his notable works is the collection "Fantasien," which showcases his skill in counterpoint and melody, reflecting the transition from the Renaissance style to early Baroque sensibilities. His compositions often include intricate vocal lines paired with rich instrumental textures, exemplifying the evolving musical landscape of the time. Although not as widely known as contemporaries like Johann Sebastian Bach, Speth's music contributed to the development of musical forms and styles that would later be prominent in the Baroque period. His influence can be seen in the works of later composers who built upon the foundations he helped establish. Overall, Johannes Speth played an essential role in the progression of German music during a transformative era.