Apocalypse 91… The Enemy Strikes Black is the fourth studio album by American hip hop group Public Enemy, released October 1, 1991, on Def Jam Recordings. It debuts production team Imperial Grand Ministers of Funk, which consisted of producers Stuart Robertz, Cerwin 'C-Dawg' Depper, Gary G-Wiz, and The JBL.The album peaked at number 4 on the Billboard 200 chart and at number 1 on the Top R&B/Hip-Hop Albums chart.