A day off after a show with no agenda in a foreign city is about the most fertile creative situation I can imagine. Just walking with nothing to do, killing time and hearing the sights and sounds of an unfamiliar place.

Playing the violin and singing and whistling are just three different ways of making sound. It's not trying to replace a band, per se. It's become a completely different thing. And it's not just simply an effect. It's just a very surprisingly intuitive thing.

You travel with the hope that something unexpected will happen. It has to do with enjoying being lost and figuring it out and the satisfaction. I always get a little disappointed when I know too well where I’m going, or when I’ve lived in a place so long that there’s no chance I could possibly get lost.

This might be a controversial thing to suggest, but in a quest to understand and relate to terrorism or school shootings, sometimes it feels like it's real, the appeal. As we've seen with ISIS, it's not always the devout who are getting into it; it's just people looking for a sense of belonging. The more they feel they're up against, the more intensity the cause has. It's an epic clash of cultures, and both sides are playing that up, but it's human beings disaffected, detached, and lonely.

I can't relate to the process of just disappearing and writing a record, all at the same time, followed by the sort of drudgery of going out on tour and trying to recreate the record, playing the same 12 songs every night.

The first splurge of creativity is kind of free, and the last 30 percent is painstakingly hard work, but it's good to light a fire and make it public and create that expectation. It's become part of the writing process, really, a way to ask the audience what they think, how they think it's going. I can't write songs in a vacuum.

I don't get particularly precious about things like this, though. Like the record company said, "We need a radio edit that delivers the hook" - I don't even know what they consider the hook in that song ["Oh No"] - "that delivers the hook sooner." So I'm like, "Okay. I see that." And they were all walking on eggshells, like is this going to be sacrilegious to me or something, to mess with this art I've created? And I'm like, "Great. I get to tinker with it, I get to mess with my song some more."