Conversation so far:
How did MC Hammer start his career?
MC Hammer formed a Christian rap music group with CCM's Jon Gibson (or J.G.) called Holy Ghost Boys.
What was special about MC hammer's career?
MC Hammer recorded his debut album, Feel My Power, which was released independently in 1987 on his Oaktown Records label.

Question: What made hammer stand out as an entertainer in his music career?
Self-contained rewrite: What made MC Hammer stand out as an entertainer in his music career?