Black Star Cassette Tape

So I just received the classic Black Star album by Mos Def & Talib Kweli from an eBay seller. I was listening to it and after what was supposed to be the last song on side 1, it kept going and played New World Water from Mos Def's Black on Both Sides and about 90% of Four Women by Reflection Eternal. At first I thought this was just to fill in the tape so it wouldn't be silent until it got to side 2, but then I realized that Four Women came out a few years after Black Star. So now I'm wondering if the tape I got wasn't original and was actually just recorded by someone else and put into the case. The jewel case, tape case, and j card all look original, so I'm not sure. Does anybody else have this album on tape and can tell me if theirs has these songs as well?