“400 Lux” is a slow-burning track with a sunny ambience about driving home with another during a sunrise and enjoying…each other.
It’s the second track off of Lorde’s debut LP Pure Heroine. It was debuted on her live tour.
A lux is a unit of measurement for light and illumination, and a sunrise or sunset is about 400 luxs on a clear day. The sunny ambience and the lyrics about driving match this tone. .