Conversation so far:
What did he do before he was known as MC Hammer?
Before he was MC Hammer, Burrell formed a Christian rap music group with CCM's Jon Gibson (or J.G.) called Holy Ghost Boys.
Was MC Hammer's christian band a success?
The Holy Ghost Boys' song The Wall was Contemporary Christian music's first rap hit ever.
Were the Holy Ghost Boys songs successful?
The Holy Ghost Boys' song The Wall was Contemporary Christian music's first rap hit ever.

Question: What label produced his music?
Self-contained rewrite: What label produced his music?