Beyoncé Giselle Knowles-Carter (/ b i ˈ ɒ n s eɪ / ⓘ bee-ON-say; [6] born September 4, 1981) [7] is an American singer, songwriter and businesswoman. Regarded as one of the most influential cultural figures in history, [8] she has been credited with transforming the sound of popular music with her vocal ability, live performances and artistic innovations.