Trumpeter Ray Nance joined, replacing Cootie Williams who had defected to Benny Goodman. Additionally, Nance added violin to the instrumental colors Ellington had at his disposal. Recordings exist of Nance's first concert date on November 7, 1940, at Fargo, North Dakota. Privately made by Jack Towers and Dick Burris, these recordings were first legitimately issued in 1978 as "Duke Ellington at Fargo, 1940 Live"; they are among the earliest of innumerable live performances which survive. Nance was also an occasional vocalist, although Herb Jeffries was the main male vocalist in this era (until 1943) while Al Hibbler (who replaced Jeffries in 1943) continued until 1951. Ivie Anderson left in 1942 for health reasons after 11 years, the longest term of any of Ellington's vocalists.