"Spring Day" () 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, Adora, Arlissa Ruppert, Peter Ibsen, Suga, 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 short story "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).

Background and release BTS released their second Korean-language studio album Wings in October 2016, which charted at number one on South Korea's Gaon Album Chart and became the best-selling album of 2016 in the country. Following the success of Wings, Big Hit Entertainment announced in January 2017 that a sequel to the album, titled You Never Walk Alone, would be served as a reissue. "Spring Day" was confirmed to be slated for release on the reissue when the band subsequently shared the track-listing of the album. On February 10, 2017, the song was announced as the lead single from the album. Band member RM created the main melody of the song, which he wrote between November and December 2016 during a walk at Saetgang Eco Park in Yeouido, taking inspiration from the dried leaves that were blown off trees by the wind. "Hitman" Bang, RM, Adora, Arlissa Ruppert, Peter Ibsen, Pdogg and Suga are credited as songwriters on "Spring Day", with the latter of the seven solely handling production. BTS recorded vocals for the track at Big Hit Studios, Seoul, South Korea. The track was engineered by Pdogg, Jeong Wooyeong, and Ibsen, while mixing was handled by James F. Reynolds at Schmuzik Studios.

"Spring Day" was released for digital download and streaming in various countries by Big Hit Entertainment on February 13, 2017, as the lead single from You Never Walk Alone. A "Brit Rock" remix version of the track was released for free to SoundCloud on June 4, 2018. The remix has identical songwriting credits to the original version, though "Hitman" Bang serves as the producer. A Japanese version of the song was recorded, which was issued digitally for purchase on May 10, 2017 by Universal Music Japan as a B-side track of BTS' seventh Japanese-language single album, together with the versions of their Korean singles "Blood Sweat & Tears" (2016) and "Not Today" (2017) in the same language. The single album was simultaneously released as a CD single in Japan. The lyrics for the Japanese version of "Spring Day" were written by KM-MARKIT. It was subsequently included as the tenth track on the band's third Japanese-language studio album Face Yourself (2018).

Music and lyrics

Musically, "Spring Day" is a midtempo alternative hip hop and pop rock power ballad, with Brit rock and electronic influences. The song is composed in the time signature of time and the key of E major, with a tempo of 108 beats per minute. Constructed in verse–chorus form, the verses have an Eb–Gm–Cm/Cm7–Ab chord progression, whilst the chorus follows an Eb–Gm–Ab–Abm sequence. The song relies on rock instrumentation that consists primarily of keyboards, synthesizer, guitar and bass. Band member Jungkook provided backing vocals for the track alongside Arlissa Ruppert.

The production of the song makes use of EDM synths, thick compressed bass and piano. It further utilizes a "mechanical hissing" percussion and "whining" electronic sounds, which provide "an enveloping airlock." The song consists of "rap-breaks," "dreamy" vocals and "half-spoken" deliveries, for which BTS' vocal range spans from B3 to B5. The verses are driven by "dense" chords, "pain-shredding" guitar strums and "whirring" synths. A reviewer from The Singles Jukebox compared the chords in the composition to that of Flo Rida"s song "Wild Ones" (2011).

Speaking about the concept and meaning behind "Spring Day" during a V Live broadcast, RM stated that he wrote the lyrics when thinking of his middle and high-school mates, from whom he hadn't heard in a long time. RM compared the song's mood to that of the band's 2015 singles, "I Need U" and "Run". Lyrically, the song uses a seasonal metaphor to compare the longing and separation from loved ones to "internal winter." The verses use "snow-y imagery" to explore themes of loss, yearning, grief, and moving on: "I wanna hold your hand/ And go to the other side of the earth/ Wanna put an end this winter/ How much do I have to long for you like snow piles up on the ground/ Until the spring days come?" The line, "Like a snowpiercer, I was left alone" is a reference to Bong Joon-ho's movie Snowpiercer (2013), while "I hate even this moment that is passing by" is a line used to suggest the "ephemerality" of life. The track's lyrics also speak of "a mature society that can embrace the wounds of others," and they touch upon themes of mental health and depression. During the chorus, the line "I want to see you" is repeated several times. Towards the end of the song, the band relay comfort and warmth to the listener by being hopeful of a reunion: "No darkness, no season/ Can last forever."

Critical reception "Spring Day" was met with widespread critical acclaim from music critics and fans. Jeff Benjamin of Billboard praised the track's lyrical content and BTS' vocal delivery, writing that the song "showed an artistic turning point for the band, who have now evolved past a one-track mind with their music and lyrics, as the guys set the groundwork for their biggest material to date." In another review for the same magazine, Benjamin stated that while the song keeps up with the "hard-hitting beats, buttery vocals and punchy rap verses—as one would expect from any BTS release, it's "newfound maturity and enlightenment that makes the single stand out so much." Caitlin Kelley, also of Billboard, cited the track as one of the best songs by BTS and said that it "packs an emotional wallop as the lyrics hover in the bargaining stage of coping with the absence of a loved one." Taylor Glasby of Dazed lauded the song's production and the band's vocal delivery, regarding the track as "an intelligent, compelling and elegantly restrained study of loss and longing" that "deliberately avoids cliché pomp and drama." Glasby also wrote an article for Vogue, in which she called the song an "epic ballad." IZMs Hyo-beom Jeong acclaimed the track, highlighting the "high degree of perfection" in its music and he regarded the track as a "smooth lyric progression, easy listening melody, and lyrical song that spans generations." Jeong added, "this is a delicate and sad sensibility different from the intense 'BTS' hip-hop style. Among the songs they released this year, 'Spring Day' was the reason why they consistently received popular love."

Jacques Peterson of Idolator said the band "tugged on the heartstrings with this hit," which he felt is "K-pop's answer to the Mariah Carey classic 'One Sweet Day'." In The Malaysia Star, Chester Chin regarded the song as "the most vulnerable cut" on You Never Walk Alone and opined that it "sees the boys baring their soul, shedding light on a more sentimental side of the group." Reviewing for Vulture, T.K. Park and Youngdae Kim felt that the song "opened a new chapter in [BTS'] aesthetics" by "substituting the group's previous calling card in hip-hop with the romanticism in pop and rock." They further wrote that "each component of the song contains a clear melody, evoking overwhelming nostalgia and longing." Music journalist Youngdae Kim said that the track displayed significant growth in the band's sound, lyricism and aesthetics by embodying nostalgia and sorrow. Rhian Daly of NME listed it as BTS' best song, labelling the track an "absolutely gorgeous, a stirring piece of alt-pop." He also praised the track's lyrical content and said that it is "a classic – a glistening jewel in a canonical crown bedazzled with them." Hyun-su Yim from The Korea Herald acclaimed the song, stating that it "has beautiful melodies without getting too soppy, as crisp vocals and clean guitar riffs aided by sentimental lyrics make for easy listening." On the other hand, Sungmi Ahn, of the same publication, described the song as an "emotional pop rock tune." Theresa Reyes of Vice was impressed by "the ballad's complex metaphors on love, life, and death." Malvika Padin from Clash also enjoyed the track and considered it "always-emotive."

Billboard, Dazed and IZM selected "Spring Day" as one of the best K-pop songs of 2017 on their respective lists. The former of the three ranked it at number 37 on their decade-end list of the 100 best K-pop songs of the 2010s. On behalf of the publication, L. Singh wrote that the existence of the song "is probably the most accurate representation of BTS's artistry." Rolling Stone placed it at number 19 on their 2020 list of the greatest boy-band songs of all time and called the song "a sentiment as timeless as BTS have become."

+ "Spring Day" on select critic lists Publication List RankBillboard The 20 Best K-pop Songs of 2017 5 The 100 Greatest K-pop Songs of the 2010s: Staff List 37 Dazed The 20 Best K-pop Songs of 2017 1 IZM The Best Songs of 2017 No order Rolling Stone 75 Greatest Boy Band Songs of All Time 19 100 Greatest Songs in the History of Korean Pop Music 4 The 500 Greatest Songs of All Time 280 The 250 Greatest Songs of the 21st Century So Far 37

Awards "Spring Day" won the Song of the Year award at the 2017 Melon Music Awards. It won the Digital Bonsang at the 32nd Golden Disc Awards. The song also achieved the top spot on various South Korean weekly music programs, garnering a total of four awards. It also achieved a Melon Weekly Popularity Award for the week of February 20, 2017, due to the substantial success of the song on digital platforms.

+Awards for "Spring Day" Year Organization Award Result 2017 9th Melon Music Awards Song of the Year 2018 32nd Golden Disc Awards Digital Bonsang Digital Daesang 7th Gaon Chart Music Awards Song of the Year – February

+Music program awards Program Date Show Champion February 22, 2017 M Countdown February 23, 2017 Music Bank February 24, 2017 Inkigayo February 26, 2017

Commercial performance