The correct answer is: Betty Carter
Betty Carter was born Lillie Mae Jones in Flint, MI, on May 16, 1930 (though some sources list 1929 instead). She grew up in Detroit, where her father worked as a church musical director, and she started studying piano at the Detroit Conservatory of Music as a child. In high school, she got hooked on bebop, and at 16 years old, she sat in with Charlie Parker during the saxophonist’s Detroit gig. She won a talent contest and became a regular on the local club circuit, singing and playing piano, and also performed with the likes of Dizzy Gillespie, Sarah Vaughan, and Billy Eckstine when they passed through Detroit. When Lionel Hampton came to town in 1948, he hired her as a featured vocalist. Initially billed as Lorraine Carter, she was soon dubbed “Betty Bebop” by Hampton, whose more traditional repertoire didn’t always mesh with her imaginative flights of improvisation. In fact, according to legend, Hampton fired Carter seven times in two and a half years, rehiring her each time at the behest of his wife Gladys. Although the Betty Bebop nickname started out as a criticism, it stuck, and eventually Carter grew accustomed to it, enough to permanently alter her stage name.Carter and Hampton parted ways for good in 1951, and she hit the jazz scene in New York City, singing with several different groups over the next few years.
– Steve Huey, from The All Music Guide to Jazz
Betty Carter sings with Lionel Hampton’s orchestra