Johann Ernst Hartmann (c. 1700 – 1753) was a German composer and musician associated with the Baroque and early Classical periods. He primarily composed choral and instrumental music, often blending elements of the German tradition with Italian influences. Hartmann was known for his sacred music, particularly cantatas and motets, which showcased his skill in counterpoint and melodic invention. One of his notable works includes the "Geistliche Concerten," a collection of sacred concertos that exemplify his ability to convey emotion through music. Additionally, his contributions to the development of church music in the Lutheran tradition were significant, as he sought to enhance the liturgical experience through his compositions. Hartmann's impact on music is seen in his role as a bridge between the Baroque and Classical styles, influencing subsequent generations of composers in Germany. His work laid the groundwork for more expressive and structured forms of music that emerged in the Classical era. While not as widely recognized as some of his contemporaries, Hartmann's dedication to choral music and sacred themes secured his place in the history of German music.