Karl Hasse (1810–1888) was a German composer and conductor primarily associated with the Romantic era. Though not as widely recognized as some of his contemporaries, Hasse made significant contributions to the development of German operatic and choral music. He was known for blending traditional forms with the emotive qualities characteristic of Romanticism. Hasse's notable works include operas such as "Rosa von Lima" and "Die Engel von Päris," alongside a variety of choral compositions and lieder. His music often features rich harmonies and expressive melodies, reflecting the emotional depth of the period. Despite his relatively modest fame during his lifetime, Hasse's influence can be seen in the works of later composers who expanded on the themes and techniques he employed. His emphasis on lyrical expression and orchestration paved the way for future developments in German music, particularly in opera. Though his music is not frequently performed today, Hasse's contributions to the Romantic movement and his role in the evolution of German musical identity remain noteworthy in the history of classical music.