And of course, pop music is all about memorability and simplicity and positive messages and a little dash of joy.

Any kind of anthemic song, for the most part, they're on the positive side of things. It's not hard to identify when a melody is just one degree too complicated or one degree too simple and where that line of pop memorability lies.

'Metals' has partly been about me regaining my self respect and I feel like I'm growing the muscles I want to grow again.

Well, there's just some universal truths in a way that I've just observed to be true. You read Voltaire. You read modern literature. Anywhere you go, there's these observations about romantic love and what it does people, and these rotten feelings that rarely are people meaning to do that to each other.