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Additional remixes by Galantis and David Guetta were released in November. A third remix, done by Suga of BTS, was released on 18 October. On 26 September, the Inside My Universe making-of documentary of the song was released, alongside a "Supernova 7" remix and an acoustic version. However, speculations about a collaboration between the two groups had already started circulating in February 2021, after BTS covered their 2005 hit song " Fix You" on MTV Unplugged. Following the release of the " Permission to Dance" music video in early July 2021, the groups first collaborated during an episode of the YouTube series Released, during which they joined a discussion with Coldplay's frontman Chris Martin on what inspired the "#PermissionToDance Challenge". The single was announced through a coded message on Coldplay's Alien Radio FM social media account. On 13 September 2021, the song was revealed to be a collaboration between Coldplay and BTS.
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A snippet of the song was included in a trailer titled "Overtura", also omitting any evidence of the Korean group being involved. The title of the song was first announced as part of the track listing release of Music of the Spheres in July 2021 without any mention of the song featuring BTS.
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The official music video, directed by Dave Meyers, was released on 30 September 2021 and features both groups performing on different futuristic planets (Floris, Calypso, and Supersolis) alongside a fictional band named "Supernova 7" via the "Holoband" technology developed by DJ Lafrique, set in an era where music is banned around the universe. The track also reached number one in Hungary, Malaysia and Singapore the top ten in Australia, Belgium, Canada, India, Ireland, and South Korea and the top twenty of twelve other countries, including Germany, The Netherlands, Norway, and New Zealand. It premiered at number three in the UK Singles Chart, claiming the second-biggest week of the year in downloads, and eventually becoming the most downloaded song of 2021 by a group in the country. "My Universe" received positive reviews by music critics. The single is also the first track by two co-billed lead groups to top the chart and the first song by a British group to debut at number one in the United States' history. It debuted at number one on the Billboard Hot 100, becoming BTS' sixth US chart-topper and Coldplay's second after 2008's " Viva la Vida". It was released on 24 September 2021, through Parlophone and Atlantic Records, as the second official single from Music of the Spheres, the former group's ninth studio album. " My Universe" is an English and Korean song by British rock band Coldplay and South Korean pop group BTS.
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