According to Michael's own children and mother, some of the songs on the album are fakes 

Sony reps, of course, claim they have performed voice-authentication tests with "sound experts" who concluded that the vocals on the album indeed belong to none other than the King Of Pop. The label also issued a teaser preview of one of the Cascio-produced songs, "Breaking News," so that fans could listen to it and judge for themselves. However, since the teaser was almost entirely instrumental, except for a couple yelps in the final seconds, it didn't really do much to dispel the Jackson clan's claims. Listen to it below...does that "ow!" sound like Michael Jackson to you, or an impostor?

yep...that's what the article say

so is it him singing or is it an imposter?

all I know is I hate how MJ's children are exploited! He wouldn't have liked his children to be in the spotlight as young. Paris is very little