HOLLYWOOD, Calif. — The new Michael Jackson song "This Is It" will debut at midnight Sunday on the late singer's official Web site, Sony Music has revealed.

The track is the first song from the upcoming Jackson documentary by the same name, which opens for a two-week limited theatrical release on Oct. 28.

"This Is It" was remixed to feature vocals from Jackson's brothers and has been billed by Sony as an "exciting moment in music history for one of the world's most revered artists."

The King of Pop, who died on June 25, originally recorded the track for his 1991 album, "Dangerous," but it was left off the release.

The song will be featured on a companion two-disc CD set that will include remastered Jackson classics like "Thriller" and "Billie Jean."

A short snippet of the single has already made its way onto the Web. Click here to listen.