Jimmy Witherspoon (1920-1997) was an influential American blues singer known for his robust, soulful vocals. His style, which straddled the boundary between blues and jazz, was characterized by a rich, expressive voice that excelled in both up-tempo jump blues and intimate ballads. Witherspoon is best remembered for his 1949 hit, "Ain't Nobody's Business," which is considered a staple of the blues genre. His significant contribution to blues and jazz has cemented his place in music history.