Astrid Stawiarz/Getty Images; Timothy Norris/Getty Images BTS, Chris Martin
In a new YouTube documentary inside the making of the song, Coldplay frontman Chris Martin revealed that when the idea to join forces was first presented to him, he grappled with the thought.
"About 18 months ago, I got a message from somebody," Martin, 44, said. "They said, 'Oh, BTS want to do a song with you.' And I said, 'How would that work?' I didn't understand how that could be possible."
But after a friend said the phrase "my universe," Martin began crafting the tune, and quickly put together a demo for the beloved K-pop group. Eventually, he made his way to South Korea to meet with the band for the very first time and record the track.
"Today has been one of the most fun days for me in the studio ever," he said in the documentary. "It's so different and it's been very difficult to get here, to Korea. We've been very lucky with people allowing us to come in for two days just to record, and it was quite a stressful journey, and I was a little bit nervous. I've never met BTS before."
Any nerves Martin had appeared to vanish by the time he met RM, 27, Jin, 28, Suga, 28, J-Hope, 27, Jimin, 25, V, 25, and Jung Kook, 24, as the documentary featured the group laughing and hugging in the studio.
"I like a lot of BTS' music because first of all, it's an incredible production, and often very unusual structures and different melodies to the ones I hear," Martin said. "It's been very cool to see each character, meet each personality, see how everybody's very individual, but they still work as a group."
The band performed the song at Global Citizen Live in New York City on Saturday in an energetic performance that featured video of BTS performing their verses behind Martin on stage.
"My Universe" will be featured on Music of the Spheres, Coldplay's space-themed ninth studio album, which is set for release on Oct. 15.