[1] The track was released on 6 July 2017 as a charity single and the third excerpt from Coldplay's thirteenth EP Kaleidoscope (2017) after "Hypnotised" and "All I Can Think About Is You".

[4] Jeremy Gordon of Spin magazine wrote: "The skittering percussion and swirling electronics that open up the song are completely dissimilar from the EDM components they picked up on the way to their regrettable successful Chainsmokers collaboration; the spooky tones permeating the spaces in between Martin's indefatigably earnest vocals sound like background music from an X-Files episode.

Martin's lyrics, which address the refugee crisis, lean hard on the maudlin side, which is not an unfamiliar space for the band to be.

"[5] Althea Legaspi of Rolling Stone magazine wrote: "The song's pulsating rhythms emulate the racing heartbeat that might accompany searching for safety in a bleak world.

[7] Darragh Berry of Joe wrote that the song has "the distinctive Coldplay sound" and called the lyrics "deep" and "meaningful".