Shanghai set out to take over from Hong Kong and I think it's done that. It's got the most amazing futuristic skyline which rivals and even betters Tokyo.

When I was in the studio with Madonna, we would work 12-hour days. If you want to work with the best, then that's what you have to do.

Shanghai set out to take over from Hong Kong and I think it's done that. It's got the most amazing futuristic skyline which rivals and even betters Tokyo.

I think anybody that is going to be taken seriously in [music] industry needs to produce their own original music.

Madonna has a very unique style and comes up constantly with these great songs.

I had Ice Cube on my first album, "Bunker," and then I did a remix for Snoop Dogg. I've worked with Grandmaster Flash and Pharrell. It's a different work process and there's a different take with how you produce [hip-hop].

When I collaborated with Nelly Furtado, the idea for the song structure came from myself, but the lyrics and the ideas behind the songs came from her.