Henri Gagnon (1892-1972) was a Canadian composer and conductor primarily known for his contributions to the field of choral and orchestral music. His work is rooted in the tradition of classical music, yet he also incorporated elements of folk music, reflecting Canada’s cultural diversity. Gagnon studied at the Montreal Conservatory and later in Europe, where he was influenced by various musical styles. Among his notable works are the choral piece "O Canada," which he arranged, and various compositions for orchestra and choir. His compositions often celebrate Canadian heritage and evoke the natural beauty of the country, contributing to a sense of national identity in music. Gagnon was also a significant figure in music education in Canada, promoting choral singing and working with various music organizations. His impact is particularly noted in the development of choral music in Canada, inspiring future generations of musicians. Through his compositions and dedication to music education, Gagnon played a vital role in shaping the Canadian music landscape in the 20th century.