On June 25, Michael Jackson's longtime collaborator Kenny Ortega had little time to comprehend his friend's death, let alone grieve over it. Hollywood's hottest choreographer-director went from preparing Jackson's 50-date London concert series to setting the paces of the pop icon's star-studded memorial to directing the behind-the-scenes film of Jackson's rehearsals for the ill-fated tour. This Is It opens on Oct. 28 for a limited two-week run with a simultaneous premiere in 15 cities around the world. Ortega spoke to TIME about the film, which he calls "the last sacred footage of a real master at his craft."
(See TIME's complete Michael Jackson coverage.)