美国达人第四季
7.4
2009美国美国主要演员：大卫·哈塞尔霍夫,珊农·奥斯博内,皮尔斯·摩根
The fourth season of Americas 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.
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