Spring Day (song)

"Spring Day" (Korean: 봄날; RR: Bomnal) is a song recorded by South Korean boy band BTS for their 2017 album You Never Walk Alone, a repackage of their second Korean-language studio album, Wings (2016). The song was written by "Hitman" Bang, RM, Suga, Adora, Arlissa Ruppert, Peter Ibsen, and its producer Pdogg. It was released for digital download and streaming on February 13, 2017, as the album's lead single by Big Hit Entertainment. A remix of the song was subsequently released for free via SoundCloud on June 4, 2018. A Japanese version of the song was issued on May 10, 2017, through Universal Music Japan, as a B-side of the single album that included the tracks "Blood Sweat & Tears" and "Not Today", both also in Japanese. The song is an alternative hip hop and pop rock power ballad, which relies on rock instrumentation. The lyrics revolve around the themes of loss, longing, grief, and moving on.

The song received universal acclaim from music critics, who praised its production, sentimental lyrics and BTS' vocal delivery. "Spring Day" received several accolades, including Song of the Year at the 2017 Melon Music Awards, and appeared on the decade-end list of best K-pop songs by Billboard. Rolling Stone named it one of the greatest boy band songs of all time. Commercially, the song was a success in South Korea debuting at number one on the Gaon Digital Chart, and it has since sold over 2.5 million copies in the country. The song also peaked at number 15 on the US Billboard Bubbling Under Hot 100.

The music video for the song was directed by YongSeok Choi and premiered on February 12, 2017. Inspired by Ursula K. Le Guin's novella "The Ones Who Walk Away from Omelas" (1973) and Bong Joon-ho's movie Snowpiercer (2013), the video explores the concepts of death, afterlife and closure. The visual was acclaimed by critics for its heavy symbolism and was awarded Best Music Video at the 2017 Mnet Asian Music Awards. BTS promoted "Spring Day" with televised live performances on various South Korean music programs, including M! Countdown, Music Bank, and Inkigayo. The song was also included on the set list of the band's second worldwide concert tour, The Wings Tour (2017).