It was written and produced by band members Guy Berryman, Jonny Buckland, Will Champion and Chris Martin, with production assistance from Paul Epworth, Daniel Green, and Rik Simpson, and co-production from Jon Hopkins, who also received songwriting credits.

[9] "Midnight" received generally positive reviews from critics, who noted a change in the sound of the band and drew comparisons to Bon Iver and Justin Vernon.

[13] Rolling Stone's Cory Grow compared Martin's vocals to Peter Gabriel "as he sings about darkness, while the synths build throughout the track before a skittery, rave-like keyboard line flits about noisy static".

[14] Idolator's Carl Williot described the song as "a haunting electronic soundscape that not only lacks the band's trademark anthemic choruses and stadium-filling guitar lines, but boasts nary a hook and has few decipherable lyrics".

[15] Lewis Corner of Digital Spy opined that the song was "subdued, murky, twinkling, but definitely not lead single material on first listen" and hailed the band for "never fail[ing] to shake up their sound and become even more successful with it.

"[16] Jamieson Cox of Time magazine felt the song "never blossoms into one of Coldplay's trademark climaxes, instead blurring into a phosphene cloud of synth melodies" but praised it for being "another step in a new direction for a band that's never been content with staying in place".

"[21] Mikael Wood of The Los Angeles Times wrote in similar tone, "The producer's lengthy reworking, which climaxes in a surging synth fantasia complete with robot voices, adds some verve to Coldplay's rather sedate original.

"[22] Tom Breihan of Stereogum noted that while the remix "might not have the same spacey majesty as peak Moroder, it still does a nice job translating the inward sweep of the original track into an orchestral disco pulse.

"[24] Idolator's Robbie Daw commented, "Here Moroder lays a hypnotic click-click-click disco beat below the Kid A-esque atmosphere of the track, and the whole thing eventually builds into a tornado of majestic synths and menacing piano chords.