“Natural Light”, to me, is such an interlude. To me, it’s kind of a homage – especially the intro – to the years that I spent making stuff they were calling ‘IDM’ back in the day… the much-maligned name for, y'know, ‘Intelligent Dance Music’ back then… I thought it’d be cool to have another kind of, I don’t know, late-sounding, sassy, semi-soulful beat mixed with that. IDM stuff from my childhood, and… that bell melody. Yeah, I… the ‘Bum, bum-bum-bum, bum-bum-buuum…’ That’s such a sad melody to me, and when I hear it I think of… like, guerillas or something, I don’t know, there’s something very kind of… not mournful, it’s not grieving, it’s not that kind of sadness, it’s melancholic, it’s like a… idle sadness to me. In fact, ‘Idle Sadness’ or ‘Idle Longing’ was a name- was a tentative song title that never actually got used because it was embarrassing. But, uh, yeah that bell melody is a little special to me. And it’s meek, y'know, it’s not up-front, it’s shy.“
-Porter Robinson, Worlds Commentary