Guy d'Hardelot (1858-1936) was a French composer and musicologist, primarily recognized for his contributions to the early 20th-century art song repertoire. His genre predominantly included classical and art songs, often infused with elements of French romanticism. D'Hardelot is best known for his songs "Because" and "The Little Dustman," both of which have been celebrated for their lyrical beauty and melodic charm. His compositions often showcase a delicate interplay between voice and piano, reflecting the influences of his contemporaries, such as Gabriel Fauré and Claude Debussy. In addition to his songwriting, d'Hardelot held significant roles as a music educator and was influential in promoting French music abroad, particularly in the United States, where he spent a considerable part of his career. His work helped bridge the gap between French art song traditions and the American music scene, introducing a wider audience to the nuances of French vocal music. While not as widely recognized today, Guy d'Hardelot's contributions to the development of art song and his role in music education have left an enduring impact, particularly within the realms of classical vocal performance.