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Brad Paisley is demonstrating that he's "got talent" by introducing his new single.  The country star debuted "I Can't Change The World" as a guest performer on Wednesday's episode of NBC's "America's Got Talent."  The singer put his vocal skills on display in giving the song a powerful finish. 

The show also featured a performance from R&B star Robin Thicke, who sang the chart-topping title track to his new album, "Blurred Lines," while four acts advanced to the semifinals. 

Country singer Marty Brown pulled off a surprise victory even he admitted he didn't deserve following his less than impressive performance of Shania Twain's "You're Still The One" on Tuesday. 

The acrobatic dance team Innovative Force, the operatic trio Forte, and comic-impressionist Angela Hoover are also moving on.