Ella Fitzgerald
In 1955, Fitzgerald left Decca, and joined Granz's new record label, Verve Records. She said later, "I had gotten to the point where I was only singing bebop.  I thought bebop was 'it', and that all I had to do was go some place and sing bop. But it finally got to the point where I had no place to sing. I realized then that there was more to music than bop. Norman....felt that I should do other things, so he produced The Cole Porter Songbook with me. It was a turning point in my life."