Rap superstar 50 Cent kicks off Yahoo! "s new Crash Concerts performance series with a surprise show at the Madison Square Boys & Girls Club in Brooklyn, New York.

With G-Unit partner-in-rhyme Tony Yayo and DJ Whoo Kid in tow, the "In The Club" rapper gives the group of more than 300 kids the afternoon of their lives, performing his hot new single, "New Day."

Before taking the stage, 50 Cent said he was nervous. "It "s an opportunity for me to influence the youth," he said.