This should be a very long thread. I will start by putting the name of a rapper. Then the next person has to say another rapper that he/she collaborated with. And it can go on like that. You CAN say the same rapper twice. Groups are allowed (e.g. D Block). You can state a member of a group if the group has already been mentioned (e.g. if somebody mentioned Westside Connection a couple of posts back, its okay to mention Ice Cube).
I will start with: 2 Pac
I will start with: 2 Pac