Conversation so far:
When did MC Hammer begin MC Hammer's music career?
Before Hammer's successful music career (with his mainstream popularity lasting approximately between 1988 and 1998) and his "rags-to-riches-to-rags-and-back saga", Burrell formed a Christian rap music group.

Question: What was the group name?
Self-contained rewrite: What was the Christian rap music group name formed by MC Hammer before his successful music career?