As you might know Bassmint Productions was a hybrid of members of two separate hip-hop groups that existed simultaneously, each including one of two twin brothers. Both groups only lasted from 1988 to 1989.
In late Fall 1989, both groups dissolved to form Bassmint Productions, which was dually-fronted by Double M (who became M&M and later Eminem), Chaos Kid, Manix and DJ Butter Fingers. Stezo remained a sort of auxiliary member, with the addition of another skilled emcee in his own right, Vitamin C (Jason Fields).
Below is the song from that period of time. The video was uploaded 1 month ago. This might be never-before-heard track for you. Listen to it below: