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.
What made MC Hammer stand out as an entertainer in his music career?
MC Hammer released a single called Ring 'Em, and largely on the strength of tireless street marketing by Hammer and his wife, it achieved considerable popularity at dance clubs.

Question: Did hammer have any issues with other artists?
Self-contained rewrite: Did MC Hammer have any issues with other music artists?