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 Pleasure catapulted the contrafact into wide popularity (King Pleasure even cites Jefferson as a personal influence). Jefferson’s songs “Parker’s Mood” and “Filthy McNasty” were also hits.

Jefferson was born in Pittsburgh, Pennsylvania, United States.^[3] 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.

Jefferson’s last recorded performance was at the Joe Segal’s Jazz Showcase in Chicago and was released on video by Rhapsody Films. He shared the stand with Richie Cole (alto sax), John Campbell (piano), Kelly Sill (bass) and Joel Spencer (drums). The performance was part of a tour that Jefferson and Cole led together. Their opening night in Detroit, Michigan, was at Baker’s Keyboard Lounge, a jazz club built in the 1930s that has played host to famous musicians including those who spanned the genre with artists as diverse as Dexter Gordon and Sonny Stitt.