Here's a rare(?!) interview with R. Kelly where he talks about his music, life and stuff:
(Sorry it's not embeddable - and the quality could be better)
...I came across some interviews where Kells is talking about working with MJ:
R. Kelly (singer/songwriter/producer, worked on 'HIStory')
[...] I grew up with the music of Michael and I've been inspired a great deal by Michael. To actually have him call me up, call my management, saying he wants me to do a song for him was a great inspiration for me to go forward in my career. And up to the day I met him it was like a big countdown. I think it's normal when you grow up to the music of someone that has been there so long and is so large. To meet this person and knowing that this person depends on me. When an artist calls a producer he makes himself dependent on him to become # 1, to get something that comes out as a track. At this time, Michael Jackson depended on me to make something come true for him.
I remember a funny thing about him. I had ordered Chinese food and had put up all these Walt Disney cups all over the studio because I knew he was a big kid. I knew that. Everyone knew that. And I also got my little dog because I knew he loved animals. I couldn't afford giraffes, but I did have a dog. It broke ice and we talked. And I went to the bathroom and my manager came with me, and I remember that I fell to the floor because I just couldn't believe it. But I got back up and straightened myself out because I realized that I had to be professional. [...] It's always great to work with someone who is wonderful because they bring you forward. Michael was very humble. He also didn't wanna change anything. Some artists want to change songs so that they like them, but I don't go for that. I don't want to destroy the magic. I don't like messing with the magic and what you risk to reach something is what you need to keep it. Michael figured this also.
[source: VIVA; October 1999]
I thought it was funny when I told Michael Jackson I didn't want to fly, and he was giving me reasons why I should. I kept looking him in the eye, and I kept saying "uh-huh, uh-huh" and "oh, I see," knowing all the time that I would not be getting on a plane. Working with Michael was definitely not just another day at the office.
[source: VIBE magazine; June/July 1995]
Question: So it was cool working with Michael?
R. Kelly: I was so nervous, I was afraid I wouldn't be able to finish the project. When he first got to the studio, something weird came over me. Michael was another level, and it was a hell of a level to go to. But passion took over, and it put a shield around me and allowed me to be just a normal guy who felt like he worked with Michael all the time.
Question: Was he really receptive, or was he, like, "No, muhfucka, I've been doing this for 30 years."
R. Kelly: He was never that. That's why he's been here for 30 years. He was more humble than me-got up under my wing. He wanted to know what it was I wanted from him. And if he could give it to me.
Question: How did that feel?
R. Kelly: Everything Mrs. McLin told me was true: I was born for this. I was ready. I didn't know that until I met Michael. My teacher told me when I was 15 that one day I would work with Michael Jackson, that one day I'd produce him, and that Quincy Jones would come to me for songs, and Stevie Wonder. I haven't worked with Stevie yet, but she told me these things would happen, and to see them come to pass is amazing.
[source: VIBE magazine; March 1996