This dissertation examines one of the basic elements of Afro-American guitar playing, namely pentatonics. The background material consists of interviews with professional guitar players as well as teachers and one student. Literature, recorded audio (CD:s), as well as video and audio documentaries, have also played an important role. The results show a consensus between the majority of the interviewed informants in this study, despite their different backgrounds and fields of study. But there are clearly differences between how the material, namely pentatonics, is used, and how it looks idiomatically on the guitar.