Ezra Sims (1923-2018) was an American composer and pianist known for his contributions to contemporary classical music. His work often blended elements of avant-garde and experimental music, reflecting a diverse range of influences. Sims was particularly noted for his use of microtonality and innovative compositional techniques. Some of his notable works include "The Four Seasons" and "Piano Sonatas," which showcase his unique approach to harmony and rhythm. He was also influential in music education, teaching at various institutions, including the University of Massachusetts Amherst. Sims played a significant role in expanding the boundaries of contemporary music, influencing a generation of composers interested in avant-garde techniques and microtonal music. His impact is recognized within the realms of both classical and experimental music.