Sony Music has dismissed claims that vocals on a new Michael Jackson album are not those of the star, reports BBC News.
It said at the weekend it had "complete confidence" they were genuine after TMZ.com reported that his two eldest children thought otherwise.
On Monday, new track Breaking News, from the forthcoming album, Michael, was posted on the singer's website.
His nephews, TJ and Taryll Jackson, have now complained on Twitter about the track's "fake" and "shady" vocals.
Sony said in its statement that it had "complete confidence in the results of our extensive research, as well as the accounts of those who were in the studio with Michael, that the vocals on the new album are his own".
A brief excerpt from Breaking News was featured on Jackson's website on Friday before the full song was posted on Monday.
It begins with a montage of news clips reporting on controversies surrounding the singer and features the lyrics: "Everybody wanting a piece of Michael Jackson, reporters stalking the moves of Michael Jackson, just when you thought he was done, he comes to give again."
