This is a very long story. He was quite difficult to work with, because it was the meeting of two different methods of working. It was stimulating, but at the same time, almost impossible to resolve. We're very pigheaded and set in our ways and Mr Bowie is too. In fact, he's probably as pigheaded as the four of us put together. I think it was a worthwhile thing to do. But after Under Pressure was done, there were continual disagreements about how it should be put out or if it should even be put out at all. David wanted to redo the entire thing. I had given up by that time because it had gone a long way from what I would have liked to see. But there is still a lot of good stuff in the song. There was a compromise; Freddie, David and Mack actually sat down and produced a mix – under a lot of strain. Roger was also along to keep the peace to some extent, because he and David are friends.