Hallways displays Grimes' distorted harmonies and vocals over an instrumental with climactic sounding drums, bass, and synth. It is the second-to-last and fifteenth track on Grimes' sophomore studio album Halfaxa, and it is five minutes and forty-four seconds in length.
[Verse 1]
I see inside myself and I know when I go
Little bird flying in the night, if only I, fly
[Chorus]
Oh, fantasy
Oh, fantasy
Oh, fantasy
[Verse 2]
I fell in your arms, take my hands until I'm filled
We fell apart
(Fell apart)
[Verse 3]
Oh no, baby we fall, fall deep then climb
Until we feel, until the sky
[Chorus]
Oh, fantasy
Oh, fantasy
Oh, fantasy
[Interlude]
Nightfall
My home
[Bridge]
Oh, fantasy
Oh, my fantasy
Take your heart and go to fantasy
Oh, in my fantasy
Oh, no, oh fantasy
Oh, oh, in my own
I left
[Chorus]
Oh, fantasy
Oh, fantasy
Oh, fantasy
Oh, fantasy
Oh, fantasy
Oh, fantasy