"Lights" is a song recorded by South Korean boy band BTS for their fourth Japanese-language studio album, Map of the Soul: 7 ~ The Journey ~ (2020).

The song was released as a double A-side single with the Japanese version of "Boy with Luv" on July 3, 2019, through Universal Music Japan.

Upon release, the song received generally favourable reviews from music critics, who praised its lyrical content and the band's vocal performance.

"Lights" was a commercial success in Japan, debuting at number one on the Oricon Singles Chart, selling 637,000 physical copies in its first week.

[4] "Lights" is an electropop power ballad in the style of dance music, that features a heavy bassline and "clear" piano-driven chord progression in its composition.

Edition B also comes with a DVD that contains behind the scenes footage of the music video for "Lights" and the making of album jacket photos, while C contains a 36-page photobook.

"[5] Writing for Teen Vogue, Sara Delgado shared a similar view, deeming the band's vocal delivery as "awe-inspiring.

"[8] In his review for Idolator, Mike Nied regarded the song as a "soaring anthem" which he felt complemented the "soft and dreamy" accompanying visuals.

[17] During the tracking period of July 1–3, 2019, the single recorded 636,345 copies sold, achieving higher sales than "Fake Love / Airplane Pt.

[27] On August 8, 2019, "Lights" received a million certification from the Recording Industry Association of Japan (RIAJ), denoting shipments of 1,000,000 copies, making BTS the first male foreign artist to achieve this.

[36][38] The visual is interspersed with scenes that show the band heading to an ATM, buying popcorn, discovering secret passageways, and running through a car park.

[37] At one point, the projector beam scatters into tiny particles of light that turn into glowing orbs reminiscent of stars.

[35] In her review for CelebMix, Ellie Nicholas called the music video "simplistic yet so beautiful" that it "matches the tone of the song perfectly.

"[39] On November 23 and 24, 2019, BTS performed "Lights" live for the first time as part of their fifth Japanese fan-meeting concert- Magicshop, at the Zozo Marine Stadium, Chiba, Japan.