Conversation so far:
how did hammer start MC Hammer's career?
formed a Christian rap music group with CCM's Jon Gibson (or "J.G.") called Holy Ghost Boys.
what was special about hammers career?
his "rags-to-riches-to-rags-and-back saga.
what made hammer stand out as an entertainer his music career?
CANNOTANSWER.

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