Conversation so far:
When did Phillips begin Phillip Phillips's music career?
After winning American Idol, Phillips went on the American Idol LIVE Tour.
Where did he perform?
He performed the National Anthem.
What else did he perform?
He also performed at the National Christmas Tree Lighting ceremony.

Question: Did he perform anywhere else?
Self-contained rewrite: Did Philip Phillips perform anywhere else aside from the National Christmas Tree Lighting ceremony?