Johann Joseph Emmert (c. 1710 – 1777) was an Austrian composer and music theorist, primarily known for his contributions to the classical music genre during the early Classical period. Emmert's works often reflect the transition from Baroque to Classical styles, characterized by clear melodies and structured forms. Notable works include his sonatas and chamber music, which showcase his skill in instrumentation and harmony. His contributions to music theory are significant as well; he wrote treatises that influenced the understanding of harmony and musical structure in his time. Emmert was associated with the Viennese musical scene and held positions that allowed him to interact with prominent composers of the era. Though not as widely recognized today as some of his contemporaries, Emmert's work laid groundwork for future developments in classical music, particularly in the realms of sonata form and orchestration. His influence can be seen in the works of later composers who embraced the clarity and balance that characterized the Classical style. Overall, Johann Joseph Emmert played a pivotal role in the evolution of Western classical music during a transformative period.