Theo Uden Marsman (1906-1984) was a Dutch composer and conductor, primarily known for his contributions to classical music and contemporary compositions in the Netherlands. His work spans various genres, including orchestral, chamber music, and vocal compositions, often reflecting the influences of both traditional Dutch musical elements and modernist techniques. Notable works by Uden Marsman include his orchestral pieces such as "Symphony No. 1" and "Symphony No. 2," as well as various chamber works and songs that showcase his lyrical style and intricate harmonies. He was also known for his choral compositions and contributions to the Dutch music scene through teaching and conducting. Uden Marsman's impact on music lies in his role as a bridge between traditional Dutch music and contemporary styles during a time of significant change in the 20th century. He was instrumental in promoting new music through performances and festivals, helping to establish a vibrant cultural landscape in the Netherlands. His legacy continues to influence Dutch composers and musicians today, reflecting his commitment to both innovation and the preservation of musical heritage.