Jon Leifs (1899–1968) was an Icelandic composer and conductor, recognized for his contributions to classical music and the development of a distinct Icelandic musical identity. His work primarily encompasses the genres of symphonic music, choral works, and operatic compositions. Leifs is known for integrating Icelandic folk elements and mythology into his music, which helped to establish a nationalistic style that resonated with Iceland's cultural heritage. Notable works include "Hekla," a symphonic poem inspired by the Icelandic volcano of the same name, and "Þrymskviða," an opera based on an ancient Norse poem. His compositions often reflect the dramatic landscapes and folklore of Iceland, and he was instrumental in promoting Icelandic music on both national and international stages. Leifs' impact on music is significant as he helped to elevate Icelandic classical music and inspire future generations of composers. His dedication to utilizing traditional Icelandic themes in contemporary contexts has made him a key figure in the country's cultural history, and his works continue to be performed and studied, showcasing the fusion of national identity and classical tradition.