Hear the song here via its new music video, directed by Grant Singer, which features Lorde letting loose in the auto, in the cub and on the street.
Lorde worked on the song with Jack Antonoff, best known as the guitarist of fun. and the frontman of Bleachers.
It comes with a music video that dramatizes the song's narrative.
'[It's] about me trying to figure out how to put myself back together [after heartbreak]'.
Following the track's release, astute social media users began drawing comparisons to Robyn's "Dancing On My Own," a soaring, disco-inspired tune from her 2010 record Body Talk Pt. 1.
Sir Patrick Stewart and Hugh Jackman shed tears together watching 'Logan'
This is just a damned fine film, full of heart, intelligence, brimming with smart writing and great performances. You know what I love about him is that he thinks out of the box, he seems to absolutely love what he is doing.
She said as the song came to fruition she was questioning why it sounded so joyous with lyrics that were so intense.
"'I was like "oh sh*t, this is it.' This was kinda the first thing that we really... all of a sudden everything else we'd written for the record started to make sense", she explained". "Green Light" may be more "pop" than "alt", but we're confident this so-called "new chapter" will bring plenty of promise.
Lorde released her debut album Pure Heroine in 2013 and curated the soundtrack for the Hunger Games the following year, but hasn't released anything as an individual recording artist since 2013.
The single itself lyrically touches on betrayal ("I know about what you did and I wanna scream the truth/She thinks you love the beach, you're such a damn liar")-perhaps the heartbreak Lorde alluded to in a Facebook post in November. "Green Light" will also be featured on iHEARTRADIO's "New Hits Weekly" and "New Alt Weekly" on-demand playlists.
Lorde said the new album is now really "special" for her to listen to, because she told the truth "so starkly" to herself.
Let it all the way out, girl; we're ready for it - and need to hear it just as badly. At a second location - the intersection of Ponsonby Rd and Karangahape Rd - fans came across a white auto filled with green lights and smoke.