03/18/2010 05:12 am ET Updated May 25, 2011

Paul Oakenfold: Brittany Murphy Had Great Musical Potential

Until Brittany Murphy lent her voice to the penguin Gloria in the 2006 animated hit Happy Feet, the public had gotten only a taste of the chanteuse within the actress on a No. 1 dance club track called "Faster Kill Pussycat," written and produced by Grammy-nominated British trance artist Paul Oakenfold.

"Brittany trained as a singer before she did as an actress," Oakenfold tells PEOPLE. "She was a great actress but she had great vocal potential."

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