Cause of death: diabetes
Ella Jane Fitzgerald (April 25, 1917 – June 15, 1996) was an American singer, songwriter and composer, sometimes referred to as the "First Lady of Song", "Queen of Jazz", and "Lady Ella". She was noted for her purity of tone, impeccable diction, phrasing, timing, intonation, absolute pitch, and a "horn-like" improvisational ability, particularly in her scat singing.
After a tumultuous adolescence, Fitzgerald found stability in musical success with the Chick Webb Orchestra, performing across the country but most often associated with the Savoy Ballroom in Harlem. Her rendition of the nursery rhyme "A-Tisket, A-Tasket" helped boost both her and Webb to national fame. After taking over the band when Webb died, Fitzgerald left it behind in 1942 to start her solo career. Her manager was Moe Gale, co-founder of the Savoy, until she turned the rest of her career over to Norman Granz, who founded Verve Records to produce new records by Fitzgerald. With Verve, she recorded some of her more widely noted works, particularly her interpretations of the Great American Songbook.
Fitzgerald also appeared in films and as a guest on popular television shows in the second half of the twentieth century. Outside her solo career, she created music with Louis Armstrong, Duke Ellington, and The Ink Spots. These partnerships produced songs such as "Dream a Little Dream of Me", "Cheek to Cheek", "Into Each Life Some Rain Must Fall", and "It Don't Mean a Thing (If It Ain't Got That Swing)". In 1993, after a career of nearly sixty years, she gave her last public performance. Three years later, she died at age 79 after years of declining health. Her accolades included 14 Grammy Awards, the National Medal of Arts, the NAACP's inaugural President's Award, and the Presidential Medal of Freedom.
Source : Wikipedia