Which composers was known for using folk-based fiddle tunes l?

Aaron Copland is well-known for incorporating folk-based fiddle tunes into his compositions, particularly in works like "Appalachian Spring" and "Billy the Kid." He drew inspiration from American Folk Music to create a distinctively American sound in Classical Music. Other composers, such as Béla Bartók and Percy Grainger, also utilized folk themes in their works, but Copland is particularly celebrated for his synthesis of these elements.