The only formula we have when we work together is that we both have to have a product we can endorse when we finish. Something we both like. It's a matter of compromise. In the end what you get is what both of us can agree on. In that comes Tears for Fears. I don't know what the mix or magic is, that's just what it is.
I think what we find fascinating and interesting is when people take our music and turn it into emotionally something else. And weirdly, Lorde's version of 'Everybody Wants to Rule the World,' the production really goes with the lyric more than our version does, because our version, albeit the lyric is dark, the music is quite uplifting.