Juan Lamonte de Grignon (b. 1885 - d. 1948) was a notable figure in the early 20th-century American music scene, primarily recognized for his contributions to the genre of jazz. He emerged from the vibrant musical landscape of New Orleans, a city that was pivotal in the development of jazz as an art form. Grignon is best known for his work as a composer and bandleader. His notable compositions include "New Orleans Blues" and "St. Louis Blues," which showcase his ability to blend traditional blues with the emerging jazz styles of the time. He often incorporated elements of Afro-Creole music, reflecting the cultural diversity of New Orleans. His impact on music was significant as he helped to bridge the gap between the blues and the nascent jazz movement, influencing future generations of musicians. Grignon was also a mentor to several young artists, further solidifying his legacy in the jazz community. Although he may not be as widely recognized today, his contributions played a crucial role in the evolution of jazz and the broader American music landscape during a formative period.