Mary De Loach, an American blues singer, is best known for her contributions to the genre in the mid-20th century. Her music style is characterized by soulful blues, with raw emotional depth and a commanding vocal delivery. She gained recognition through her work with blues musicians such as Lowman Pauling and the "5" Royales. De Loach’s heartfelt renditions and her distinctive sound make her an important figure in the history of blues music.