I've been going to China every year now for more than a decade.

I wish my friends at William Morris Endeavor all the best.

All of the artists that I've worked with have an incredible work ethic. And Madonna has the best work ethic of them all. I've learned a lot from being around her.

I would give the same advice to anyone, celebrity or not. Produce your own music, keep in original, and be real. You need to earn the respect of your fans for your original work in music, and not rely on your celebrity in other mediums. The same would apply for actors who sing, dance, or even play sports.

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

U2 and folks like that. They all have that similar drive and that belief in themselves. They're early birds ... they're up working when everyone else is sleeping. They're simply all great at what they do.

I've worked with everyone from Ice Cube to Snoop Dogg ... right across to working with pop stars like Justin Timberlake. Why those artists came to me is because they wanted my sound.