Watch a Clip From Michael Jackson's This Is It

Michael Jackson's posthumous concert film This Is It hits theaters in two weeks, but fans can get an extended first look at this highly anticipated release now. In this clip, Jackson performs "Human Nature," his 1983 ballad  from his record-breaking album Thriller. The never-before-seen footage, which also features tour director and longtime choreographer Kenny Ortega, shows Jackson preparing for the This Is It Tour, which was set to begin in July in London. Jackson died June 25 at the age of 50.

 Check out the clip and sound off in the comments section below. This Is It opens nationwide Oct. 30.