1. March, 1970: James Brown releases “Funky Drummer.”
2. 1976: The Whole Darn Family release “Seven Minutes of Funk.”
3. 1980: Roland introduces the TR-808
4. 1988–1990: N.W.A. spawns Ice Cube and Dr. Dre
5. July 25, 1989: The Beastie Boys release Paul's Boutique
6. November 9, 1993: Wu-Tang Clan and A Tribe Called Quest release perfect albums
7. April 19, 1994: Nas releases “Illmatic.”
8. August 3, 1995: André 3000 promises that “The South got somethin' to say.”
9. February 8, 2004: Outkast wins Album of the Year for Speakerboxxx/The Love Below
10. 2005: DatPiff starts hosting mixtapes online
11. 2005–2008: Lil Wayne churns through mixtapes and guest appearances
12. October, 2009: RapGenius adds another layer to lyrics