In January 2015, the band won BBC's Sound of 2015 poll. In the same month, the band's sixth single, "King", was previewed on BBC Radio 1 and selected as Zane Lowe's Hottest Record in the World. "King" was released on 1 March 2015 and reached number one on the UK Singles Chart. Internationally, the single peaked within the top ten of the charts in Australia, Austria, Bulgaria, Denmark, Germany, Luxembourg, the Netherlands, the Republic of Ireland and Switzerland. On 25 February 2015, Years & Years were nominated for the Critics Choice Award at the 2015's BRIT Awards. On 18 March 2015, Years & Years announced their debut studio album, "Communion" on their Instagram profile. It was released on 10 July 2015, by Polydor Records, debuting at number one on the UK Albums Chart. As well as it being the fastest-selling debut album in 2015 from a UK signed band, it was also the first number one on the inaugural New Music Fridays release date, marking a moment in history. To celebrate the launch of the album, a world first interactive ad-break takeover happened on Channel 4, on the evening the album was released. Three exclusive music videos for the band's next single, "Shine", were filmed especially for the initiative, and fans were encouraged to 'take control' of the ad break by tweeting the hashtag for the video they most wanted to see; #ChooseLight, #ChooseShadow or #ChooseDark. The initiative garnered 1.55 million viewers and resulted in the most interacted-with ad in Channel 4 history. "Shine" was released as the band's seventh single, serving as a follow-up to their sixth single, "King". It was released on 5 July 2015, peaking at number 2 on the UK Singles Chart. "Eyes Shut" was released as their eighth single that was to be taken from "Communion". The music video for the single was released on 27 September 2015, and the video depicted the band exploring a post-apocalyptic world, set in the outskirts of Sofia, Bulgaria. In January 2016, Years & Years were nominated for four BRIT Awards, including British Group, British Breakthrough Act, British Single (for "King") and British Artist Video (also for "King"). On 2 March 2016, the band announced that Tove Lo would feature on their next single; a new version of, "Desire". The music video was released on the next day, accompanied by an open letter from frontman Olly Alexander on the band's Facebook page.