Classic female blues was an early form of blues music, popular in the 1920s. An amalgam of traditional folk blues and urban theater music, the style is also known as vaudeville blues. Classic blues were performed by female singers accompanied by pianists or small jazz ensembles and were the first blues to be recorded. Ma Rainey, Bessie Smith, Ethel Waters, and the other singers in this genre were instrumental in spreading the popularity of the blues.

Blues is a music genre and musical form that originated amongst African-Americans in the Deep South of the United States around the 1860s. Blues incorporated spirituals, work songs, field hollers, shouts, chants, and rhymed simple narrative ballads from the African-American culture. The blues form is ubiquitous in jazz, rhythm and blues, and rock and roll, and is characterized by the call-and-response pattern, the blues scale, and specific chord progressions, of which the twelve-bar blues is the most common. Blue notes, usually thirds, fifths or sevenths flattened in pitch, are also an essential part of the sound. Blues shuffles or walking bass reinforce the trance-like rhythm and form a repetitive effect known as the groove.