Conversation so far:
What was a major product endorsement ?
Ai has worked on four major Coca-Cola TV commercial campaigns.
did he have any big moves in his carrer?
Ai's most high-profile work for a TV drama was the theme song for 2006's primetime drama Team Medical Dragon.

Question: did he only do song work?
Self-contained rewrite: did Ai (singer) only do song work?