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According to TMZ.com a couple of New Jersey musicians have sued Mary J. Blige, Jay-Z and others, claiming M.B. and Jay-Z have made a killing by ripping off their tune.

Jermaine Jumpp and Michael C. Adams claim in a federal lawsuit they handed a “compact disk” to the “office” of megaproducer Rodney “Darkchild” Jerkins with the song “On My Grind.”

Then, not-so-magically, four years later, Mary J. recorded “Enough Cryin'” — produced by Darkchild — and the guys say it sounded awfully familiar.

It is unclear from the lawsuit what Jay-Z’s roll was in all this.

The defendants couldn’t immediately be reached for comment.

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