Don Gillis (1912-2008) was an American composer and conductor known for his contributions to orchestral and wind band music. Predominantly working in the classical genre, Gillis is recognized for his engaging works that often blend elements of folk and popular music. He served as the resident composer and conductor for the Dallas Symphony Orchestra, where he significantly influenced the local music scene. Notable works include his symphonies, particularly "Symphony No. 5: The 20th Century" and "Symphony No. 6: The American," which showcase his innovative use of rhythm and melody. His composition "A Symphony for Wind Band" is also highly regarded in wind ensemble repertoire. Gillis's impact on music extends to his educational contributions, as he was a dedicated educator, teaching at institutions like the University of North Texas. He advocated for the importance of music in education and was instrumental in developing programs that supported young musicians. His ability to connect classical music with broader audiences and his commitment to music education have left a lasting legacy in American music culture.