Answer the following Q with stream of consciousness. Passage: The fourth season of America's Got Talent, an American television reality show talent competition, premiered on the NBC network on June 23, 2009. Country singer Kevin Skinner was named the winner on September 16, 2009. This season is the first season to be broadcast in high definition.

Question: Based on this passage, who won season 4 of america's got talent?
The important part for answering this question is: Country singer Kevin Skinner was named the winner on September 16, 2009. Therefore, the final answer is Country singer Kevin Skinner.