Book excerpt: Hip Hop’s Amnesia is a study about aesthetics and politics, music and social movements, as well as the ways in which African Americans' unique history and culture has consistently led them to create musics that have served as the soundtracks for their socio-political aspirations and frustrations, their socio-political organizations and nationally-networked movements. The musics of the major African American social and political movements of the 1950s, 1960s, and 1970s were based and ultimately built on earlier forms of "African American movement music." Therefore, in order to really and truly understand rap music and hip hop culture we must critically examine both classical African American musics and the classical African American movements that these musics served as soundtracks for.