Sneak Peek GREAT NEW FOOTAGE: Michael Jackson in 'This Is It'

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See Michael Jackson at work in his eagerly anticipated film, fine-tuning the sound effects and music for one of his greatest hits. Click the video to watch!

When 'This Is It' opens in theaters October 28, audiences will see an unforgettable version of "Human Nature."

But is a controversy surrounding the film's L.A. premiere? Reportedly, some members of the Jackson family believe they aren't invited to the event.

Sources tell ET that's not true. Michael's mother Katherine Jackson and her family are definitely invited to see this impressive tribute to the late King of Pop.

ET / Thanks Sheril Snider!