Vocal jazz or jazz singing is a genre within jazz music where the voice is used as an instrument.
Vocal jazz began in the early twentieth century. Jazz music has its roots in blues and ragtime and can also traced back to the New Orleans jazz tradition.[1] Jazz music is characterized by syncopated rhythms, improvisation, and unique tonality and pitch deviation.[1] In vocal jazz, this includes vocal improvisations called scat singing where vocalists imitate the instrumentalist's tone and rhythm.