Madonna shares mysterious details of upcoming album

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CNN (CNN) - Madonna has announced her first album in nearly four years.

It's titled 'Madame X.'

The legendary pop star from Michigan, describes the mysterious persona as a 'secret agent' who is 'changing identities' and 'fighting for freedom.'

She said she is Madame X.

The singer began sharing details and snippets of the upcoming album on April 1 in a series of fragmented Instagram posts where she was careful to not give too much away.

Madonna also revealed her new single 'Medellin,' with Colombian singer Maluma, will come out on Wednesday.

She did not say when her album would be released.