Matthijs Vermeulen (1888-1967) was a prominent Dutch composer, conductor, and music theorist. He is best known for his contributions to modern classical music, particularly within the realms of orchestral and chamber compositions. Vermeulen's work is often characterized by its innovative use of harmony and orchestration, blending elements of expressionism and neoclassicism. Notable works include his symphonies, such as Symphony No. 1 (1929) and Symphony No. 2 (1935), which showcase his mastery of form and orchestral color. His opera "The Four Elements" (1950) and the ballet "Mistero" (1949) further exemplify his diverse compositional style. Vermeulen was also a significant figure in the Dutch music scene, advocating for contemporary music through his writings and public engagements. His impact on music extends beyond his compositions; he played a crucial role in promoting new music and fostering a greater appreciation for modernist techniques in the Netherlands. His legacy continues to influence composers and musicians, particularly in the context of 20th-century classical music.