It was written, produced, and performed by Coldplay, with co-production handled by Daniel Green, Paul Epworth, and Rik Simpson.
Lasting for three minutes and 54 seconds, "Another's Arms" features an arrangement of guitars, strings, "whooshing keys", "stuttering drums", a "female specter" that "croons in and out of focus", and Chris Martin's lead vocals.
[2][3] The song contains a vocal sample from "Silver Chord" by Jane Weaver.
Billboard writer Jason Lipshutz called "Another's Arms" "a songwriting gem", although he found the arrangement "flat".
Club felt that it was "undercooked",[4] while Consequence of Sound's Josh Terry said that the song was the "most well-crafted offering" of Ghost Stories.