Fear of a Black Planet was peak for PE. A91 lacks the excitement of the previous album the loops and beats are hard loops that grate on you, they're stale and the album lacks a musical focus. I believe this was recorded after Professor Griff was kicked out of PE for his stand on Jews and gays. And could've been hastily put together to capitalize on their successes of FoaBP. I bought this when it came out and really tried liking it, but the two standout songs (Bring tha Noise, Shut 'em Down) didn't hold a candle to the magic that FoaBP provided.