Light (Wanna One song)

On May 7, 2018, less than two months after the release of their previous mini-album, Wanna One released a 38-second teaser of the song onto their official YouTube channel, which was released alongside the track listing of their upcoming EP.^[2] From May 7, 2018, until the release of the song, teaser pictures and videos were consistently uploaded onto Wanna One's official twitter and YouTube accounts.^{[3][unreliable source?]} The song and its accompanying music video were released on June 4, 2018. It was the only song on 1÷x=1 (Undivided) to feature vocals from every member of the group.

"Light" debuted at number two on the Gaon Digital Chart, on the week ending June 9, 2018.^[4] It also peaked at number nine on the month of June 2018.^[5] It is comparatively the groups least successful single to date, being the only to not chart on Billboard's K-pop Hot 100, as well as being their least viewed music video.^[6] It was also their only single to not chart in the top 100 on Gaon's yearly chart.^[7]

The song received mixed reception from critics. The Korea Herald gave the song a negative review, saying that the song is "neither catchy nor impactful".^[8] Seoul Beats gave the song a mixed review, stating that the track "is a sonic and visual rehash of K-pop tropes that plays things far too safe for a group of their standing." They complimented the song on its simplicity and "cool camera work" shown in the music video.^{[9][unreliable source?]}