Eddie Jefferson (August 3, 1918 – May 9, 1979) was an American jazz vocalist and lyricist. He is credited as an innovator of vocalese, a musical style in which lyrics are set to an instrumental composition or solo. Jefferson himself claims that his main influence was Leo Watson. Perhaps Jefferson’s best-known song is “Moody’s Mood for Love” which was recorded in 1952, though two years later a recording by King Pleasurecatapulted the contrafact into wide popularity (King Pleasure even cites Jefferson as a personal influence). Jefferson’s recordings of Charlie Parker‘s “Parker’s Mood” and Horace Silver‘s “Filthy McNasty” were also hits.

Jefferson was born in Pittsburgh, Pennsylvania, United States. One of his most notable recordings, “So What“, combined the lyrics of artist Christopher Acemandese Hall with the music of Miles Davis to highlight his skills, and enabled him to turn a phrase, into his style he calls jazz vocalese. Eddie Jefferson was shot and killed outside Baker’s Keyboard Lounge on May 8, 1979, aged 60. He had left the club with fellow bandleader Cole around 1:35 a.m. and was shot while walking out of the building. A late-model Lincoln Continental was spotted speeding away from the scene. The driver was later picked up by Detroit police and identified as a disgruntled dancer with whom Jefferson once worked and had fired from a gig. The suspect Bill Perryman was charged with murder, but was later acquitted in a Detroit criminal trial.