Conversation so far:
What was a major product endorsement of Ai's?
Ai has worked on four major Coca-Cola TV commercial campaigns.
Did Ai have any big moves in her career
Ai's most high-profile work for a TV drama was the theme song for 2006's primetime drama Team Medical Dragon.
Did Ai only do song work
In April 2011, Ai presented a music documentary.

Question: Did she ever sing with anyone else
Self-contained rewrite: Did Ai ever sing with anyone else