How did African musical traditions influence Mississippi Delta blues?

Mississippi Delta blues is deeply rooted in African musical traditions, which were adapted by the descendants of enslaved Africans in the American South. These influences are evident in several core elements of the genre:1

• Call-and-Response: This pattern, common in African music and sacred traditions like spirituals, is a hallmark of Delta blues. In this style, the singer’s vocal line (the call) is answered or complemented by a melodic phrase on the guitar.12
• Vocal and Instrumental Idioms: Blues performers often use instruments to imitate the human voice, a practice linked to talking drums in West Africa that mimic the rhythm and inflection of speech. Techniques such as "choking" strings or using a slide create a whining, voicelike sound.1
• Tonality and Style: The blues features expressive "microtonal" pitch inflections known as blue notes and a falsetto break in vocal delivery, both of which reflect African musical roots.1
• Oral Tradition: Historians often draw parallels between early itinerant bluesmen and West African griots, who served as the keepers of oral history and cultural narratives.1