This song was recorded during the sessions for Ghost Stories with Avicii. The Swedish EDM artist was invited by Chris Martin to play the piano and his imprint can be heard on the song's majestic piano lines. Speaking with BBC Radio 1 DJ Zane Lowe, Martin, who usually tinkles the ivories on Coldplay's recordings admitted he felt like he was cheating on the band when he asked the Swede to play the piano instead of him.
Chris Martin said on Fuse: "What that song represents on Ghost Stories is the release after you've climbed the mountain - after you've done anything challenging. That's why that song is so unashamedly happy and danceable: because that's what it needed to be. I love singing it. I know we didn't break the mold, but it's just so fun to play."
A house-influenced piano-centric song with pounding bass drum, this is the closest Coldplay have come to recording a dance track.
Avicii also produced the track along with the band and Ghost Stories producers Paul Epworth, Daniel Green and Rik Simpson.
The song received its TV première on the April 29, 2014 episode of BBC 2's Later... with Jools Holland and four days later the band performed it on Saturday Night Live.
Martin told the hosts on The Kevin & Bean Show that after coming up with the idea for this song, he did something different. "What happens with our songs generally is that they get sent from the universe, however they come," he said. "I don't know where they come from, in the middle of the night they come through and I take it to the rest of the band and it gets layered up, like a car being built or something."
But this time around, he took the song straight to Avicii and had it produced by the Swedish EDM mastermind.
This was the last song Coldplay added to Ghost Stories and the band appreciated the "fresh injection" by Avicii. "The rest of the band was very gracious, as usual," Martin told Kevin and Bean. "So they said, 'We trust you and let's keep rolling.'"
Filmed by movie director Mat Whitecross (The Road to Guantanamo, Sex & Drugs & Rock & Roll, The Shock Doctrine), the song's music video shows Chris Martin walking through King Street in Newtown, Sydney kitted out like a one-man band, before being joined by the rest of Coldplay. 250 fans were also invited to march from Newtown's Courthouse Hotel.
Speaking during a Beat x Beat webcast, Chris Martin explained how the song was created. "It needs to be about unconditional love," he said. "There will be a point where you'll be like, 'OK, I got that out of my system. Now let's go dancing.'"
Martin added that he was listening to Katy Perry's music when he was writing Ghost Stories. He borrowed the way the Californian songstress' tunes have a repetitive chord pattern with a sing-along melody over the top for this track.