Big Sonny and His Furys was an influential rhythm and blues band active in the mid-20th century. Known for their gritty, soulful sound, the band was led by 'Big Sonny' Edwards, a charismatic singer and harmonica player. They are best remembered for their hit single "I'm King," a pioneering track in the development of Chicago blues. Their music was characterized by raw vocals, intense harmonica solos, and a solid backbeat, elements that significantly influenced the evolution of blues music.