<P> One of the first professional blues singers was Ma Rainey, who claimed to have coined the term blues . Classic female urban or vaudeville blues singers were popular in the 1920s, among them Mamie Smith, Gertrude Ma Rainey, Bessie Smith, and Victoria Spivey . Mamie Smith, more a vaudeville performer than a blues artist, was the first African - American to record a blues in 1920; her "Crazy Blues" sold 75,000 copies in its first month . </P> <P> The musical forms and styles that are now considered the "blues" as well as modern "country music" arose in the same regions during the nineteenth century in the southern United States . Recorded blues and country can be found from as far back as the 1920s, when the popular record industry developed and created marketing categories called "race music" and "hillbilly music" to sell music by blacks for blacks and by whites for whites respectively . At the time, there was no clear musical division between "blues" and "country", except for the race of the performer, and even that sometimes was documented incorrectly by record companies . </P>

Name at least three differences between the origins of the blues and the origins of jazz