Why people used to go to clubs was to have a great time and to forget their troubles and worries and stresses of the week and enjoy themselves and I think that the music was a huge, important part of that

I never thought electronic music would get as popular in America as it has. When I first came to Vegas in 2009 for my residency - we were they only people playing electronic music at that time.

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.

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

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.

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.