The singer appears in the film - which features interviews with more than 50 of the music legend's closest friends and family members and focuses on his rise from child Prodigy to the 'King of Pop' and his shock death in June 2009 - and insists it shows aspects of his brother's life the public would not be aware of.
Speaking at the film's UK premiere at the Empire Cinema in London's Leicester Square last night (02.11.11), Tito told BANG Showbiz: "The documentary made me laugh, it made me smile, cry, I went through a lot of emotions, and a lot of memories ... I think the fans will learn a little more about Michael, what he was like and who he is, what he meant and what the fans meant to him. He loved everyone and he adored his fans. In his music he tried to give messages to make the world one unit. He wanted to change the world and help those who were in need, and he did. He left some beautiful music and things and the messages in his songs are brilliant and I want them to last forever."
Jackson 5 star Tito's sister Rebbie also appears in the documentary - which was produced by Michael's close friend David Gest and directed by Andrew Eastel - and she admits her interviews for the film had a cathartic effect on her.
Speaking on the red carpet, she said: "It was emotional to be part of it, I didn't think it was going to be as emotional as it is, but I'm happy I did it, because as much as I wanted to do it for myself as a type of therapy, I really wanted to do it for Michael. I wanted people to really see what actually happened."
'Michael Jackson: The Life of an Icon' - released by Universal Pictures - is available to buy on DVD and Blu Ray now.