I never ever really sit down at the piano and say, “right I've got to write a song now.” I feel a few things out and I get some ideas about them. It's hard to explain but there are always various ideas going through my head all the time. I scribbled down the words for Killer Queen in the dark on Saturday night and the next morning I got them all together and I worked all day Sunday and that was it, I'd got it. Certain things just come together, but others you have to work for. Now, March of the Black Queen, for instance, that was a song that took ages to complete, I wanted to give it everything, to be self-indulgent or whatever. But the whole band in particular, we don't go in for half measures and I'm pretty hard with myself. There are no compromises. If I think a song isn't quite right then I'll discard it.