"Lost Boys" is an unreleased song by New Zealand singer Lorde. It is most likely a scrapped song originally meant for Pure Heroine.
Lorde shared the song of Tumblr saying ""found this little guy whilst trawling through my archives and thought it would be a cute thing to share with y’all. we wrote this song called lost boys in about march of last year, we spent a day on it and then never touched it again (it was not a good song, i promise, haha). a lot of people asked what happened to lost boys, and i guess you’ll never hear the other three-quarters of the song, but there was something about these bridge melodies i thought was pretty. so here you go - a little pre-christmas look at the cutting room floor. xo
ps. sorry for shitty iphone quality :~)"