High School Musical 2 (also known as High School Musical 2: Sing It All Or Nothing!) is the sequel to the Disney Channel Original Movie, High School Musical. It debuted on August 17, 2007 on Disney Channel in the U.S., and on Family in Canada. The premiere brought in a total of 17.3 million viewers in the United States—almost 10 million more than its predecessor—making it, at the time, the highest-rated basic-cable broadcast in U.S. history.

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