The Thornton Sisters were a notable American vocal group in the 1940s and 1950s, famous for their tight harmonies and polished performances. Their style was rooted in traditional pop, with some elements of jazz and blues, reflecting the diverse musical influences of their era. The group is best remembered for the distinctive contralto of the eldest sister, Mabel Thornton, which brought a unique depth to their sound. Their most influential work, "Whispering Winds", is considered a classic of mid-century American pop music.