1990’s Edutainment is the first fully formed attempt at a theory that KRS-One had been developing since By All Means Necessary: that academic-level instruction in history, philosophy, and social science could be fused with the grassroots culture of hip-hop to create a newly catalyzing form of music. “You Know the Rules,” “Blackman in Effect,” and “Edutainment” work because they refuse to separate message from messiah. KRS embodied and expanded the role of prophet and professor in hip-hop, and he got away with it because his delivery was rough and raw. Edutainment is the rare hip-hop album that was produced and rapped almost entirely by one person.