Heino Eller (1887-1970) was a prominent Estonian composer and music educator, often regarded as one of the founding figures of Estonian classical music. His work primarily falls within the genres of classical and contemporary music, and he played a crucial role in developing a national style that blended folk elements with modern techniques. Eller's notable works include orchestral pieces, chamber music, and choral compositions. Among his most famous pieces are the "Symphony No. 1" and "Estonian Rhapsody," which reflect his ability to incorporate Estonian folk melodies and rhythms into classical forms. He was also influential in the development of Estonian music education, serving as a professor at the Tallinn Conservatory and mentoring many notable composers, including Arvo Pärt and Eduard Tubin. Eller's impact on music extends beyond his compositions; he helped shape the cultural identity of Estonia in the 20th century through his dedication to fostering a distinct Estonian musical language. His legacy is celebrated in Estonia, where he is honored as a pioneer who laid the groundwork for future generations of composers.