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Does Madonna's album title, MDNA, reference drug use?

In this online exclusive, Madonna addresses the controversy over whether her new album's title, MDNA, is a thinly veiled reference to the drug MDMA, or Ecstasy. Madonna told Rock Center's Harry Smith that there's no coincidence between the album title and the drug.

Click here to watch Harry Smith's full interview with Madonna, 'Truth or Dare,' that aired on April 18 on Rock Center with Brian Williams.