The correct answer is: Peggy Lee
“Peggy Lee’s alluring tone, distinctive delivery, breadth of material, and ability to write many of her own songs made her one of the most captivating artists of the vocal era, from her breakthrough on the Benny Goodman hit “Why Don’t You Do Right” to her many solo successes, singles including “Mañana,” “Lover” and “Fever” that showed her bewitching vocal power, a balance between sultry swing and impeccable musicianship.
“She finally got her big break in 1941, when a vocal group she worked with began appearing at a club in Chicago. While there, she was heard by Benny Goodman, whose regular vocalist Helen Forrest was about to leave his band. Lee recorded with Goodman just a few days later, debuting with the popular “Elmer’s Tune” despite a good deal of nerves. That same year, several songs became commercial successes including “I Got It Bad (And That Ain’t Good)” and “Winter Weather.” In 1943, “Why Don’t You Do Right” became her first major hit but she left the Goodman band (and the music industry altogether) later that year after marrying Goodman’s guitarist, Dave Barbour.”
– Scott Yanow, from All Music Guide
“Why Don’t You Do Right?”