Conversation so far:
Who is Phillip Phillips?
Phillip Phillips is an American singer, songwriter and actor who won the eleventh season of American Idol on May 23, 2012.
What did Phillip Phillips win?
Phillip Phillips who won the eleventh season of American Idol.
What year did Phillip Phillips win American Idol?
Phillip Phillips won the eleventh season of American Idol in 2012.

Question: What are some of the performances he has done?
Self-contained rewrite: What are some of the performances Phillip Phillips has done since he won American Idol?