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Lightsum
Lightsum in August 2024 L–R: Nayoung, Chowon, Juhyeon, Hina, Yujeong, and Sangah
Background information
Origin	Seoul, South Korea
Genres	K-pop
Years active	2021–present
Labels	Cube
Members	Sangah Chowon Nayoung Hina Juhyeon Yujeong
Past members	Huiyeon Jian
Website	Official website

Lightsum (Korean: 라잇썸; RR: Raitsseom; MR: Raitssŏm, stylized in all caps) is a South Korean girl group formed by Cube Entertainment. The group is composed of six members: Sangah, Chowon, Nayoung, Hina, Juhyeon, and Yujeong. The group debuted on June 10, 2021, with the release of their debut single album, Vanilla. Originally an eight-piece ensemble, members Huiyeon and Jian departed the group in October 2022.

Name

The group's name, Lightsum, is a combination of the words "light" and "sum", which symbolizes "things that shine small gather together to light up the world, delivering greater positive energy through a message of hope".

History

2017–2020: Pre-debut activities

Juhyeon participated in The Unit: Idol Rebooting Project in 2017–2018 where she finished in 25th place. Chowon, Nayoung, and Yujeong participated in Produce 48 in 2018 where they finished in 13th place, 21st place, and 51st place respectively. It was later revealed that Chowon was rigged out of the lineup of Iz*One, and that her real final ranking was 6th place. Juhyeon later participated in Dancing High in 2018, but did not pass the evaluation round. Chowon was cast in Bully Bad Guys and The Dominator 3: Junior Bullies in 2020.

2021–present: Introduction, debut with Vanilla, Into the Light, and members departure

On April 15, 2021, Cube Entertainment announced that it would be debuting a new girl group, their first since (G)I-dle in 2018. The members were revealed in pairs from April 19 to 22 (in order: Juhyeon, Sangah, Chowon, Jian, Nayoung, Huiyeon, Hina, and Yujeong). A video trailer with all eight members was revealed on April 23, 2021. On May 27, it was announced that Lightsum would release their debut single album Vanilla on June 10, making their broadcast debut on Mnet's M Countdown with a performance of their debut single. On October 13, Lightsum released their second single album Light a Wish, with "Vivace" serving as the lead single.

On May 24, 2022, Lightsum released their first extended play Into the Light, with the lead single "Alive". On October 25, Cube Entertainment announced the departure of members Huiyeon and Jian from the group and that Lightsum would be reorganized as a group of six.

On May 5, 2023, it was reported that Lightsum is currently under preparations for a comeback in the first half of 2023. On June 7, Sangah participated in Mnet's girl group survival show Queendom Puzzle as a contestant. she was eliminated in the first elimination rounds. On September 18, it was announced that they would have their comeback in the second week of October with their second mini album. On September 21, it was announced Lightsum would release their second extended play Honey or Spice on October 11. On October 11, the group made their comeback after 1 year and 5 months with the release of their second EP "Honey or Spice", along with its lead single as the same name.

On July 31, 2024, the group released a teaser for their first digital single "Pose!", set for release on August 7. On August 3, the group released a concept photos for the digital single. On August 7, Lightsum released the digital single "Pose!" 10 months after their previous comeback.

Members

Timeline

Discography

Extended plays

Single albums

Singles

Videography

Music videos

Awards and nominations

References

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2. "KBS 아이돌 리부팅 프로젝트 더 유닛 – 유닛순위" [KBS Idol Reboot Project The Unit – Unit Ranking]. Korea Broadcasting System (in Korean). Archived from the original on January 13, 2018. Retrieved May 27, 2021.
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4. "Produce 48 – Week 11 Ranking". Mnet (in Korean). Archived from the original on September 11, 2018. Retrieved May 27, 2021.
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11. Ji, Min-kyung (April 20, 2021). "큐브 新걸그룹 라잇썸, 두 번째 프로필 공개..'프듀48' 한초원 멤버 확정 [공식]" [Cube's new girl group Lightsome reveals second profile ... 'Produce 48' Han Chowon member confirmed ] (in Korean). Osen. Archived from the original on April 20, 2021. Retrieved May 27, 2021 – via Naver.
12. Lee, Sun-myeong (April 21, 2021). "큐브 엔터 새 그룹 '라잇썸' 나영·휘연, 얼굴 공개" [Cube Entertainment's new group 'Lightsum' Nayoung and Hwiyeon reveal their faces] (in Korean). Sports Kyunghyang. Archived from the original on April 21, 2021. Retrieved May 27, 2021 – via Naver.
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17. Kim, Min-ji (June 11, 2021). "큐브 신인 라잇썸, '엠카'서 성공적 데뷔 무대...상큼+발랄" [Cube rookie Lightsome, successful debut stage in 'Mcar' ... refreshing + lively] (in Korean). News1. Archived from the original on June 12, 2021. Retrieved June 12, 2021 – via Naver.
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19. Kim, Ye-na (May 9, 2022). "라잇썸, 7개월 만에 컴백...24일 미니 1집 '인투 더 라이트' 발표" [Lightsum, comeback after 7 months...The 1st mini album 'Into the Light' was released on the 24th] (in Korean). Yonhap News Agency. Archived from the original on September 24, 2021. Retrieved May 9, 2022 – via Naver.
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24. "라잇썸, 1년5개월 공백 깨고 10월 컴백". Naver News (in Korean). September 18, 2023. Archived from the original on September 13, 2024. Retrieved September 13, 2024.
25. Lee, Seung-hoon (September 21, 2023). "라잇썸, 레트로 품고 컴백..미니 2집 아트워크 티저 오픈" [Lightsum, comeback with retro vibes...2nd mini album artwork teaser revealed] (in Korean). MT Star News. Archived from the original on September 22, 2023. Retrieved September 22, 2023 – via Naver.
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27. Kim, Sun-woo (August 1, 2024). "라잇썸, 반가운 귀환…10개월만 컴백" [Lightsum, a welcoming return... comeback after 10 months] (in Korean). JTBC. Retrieved August 4, 2024 – via Naver.
28. "눈부신 변신! LIGHTSUM(라잇썸), 다양한 매력 담긴 'POSE!' 콘셉트 포토 공개". k-trendynews (in Korean). August 3, 2024. Archived from the original on September 13, 2024. Retrieved September 13, 2024.
29. "라잇썸, 첫 써머송 'POSE!' 발매…미니라이브 진행". straightnews (in Korean). August 8, 2024. Archived from the original on September 13, 2024. Retrieved September 13, 2024.
30. Peak positions for single albums on Gaon Album Chart:
    • "Into the Light". Gaon Music Chart (in Korean). May 22–28, 2022. Archived from the original on June 2, 2022. Retrieved June 2, 2022.
    • "Honey or Spice". Circle Chart (in Korean). October 8–14, 2023. Archived from the original on November 22, 2023. Retrieved October 19, 2023.
31. "2022년 05월 Album Chart" [May 2022 Album Chart]. Gaon Music Chart (in Korean). Archived from the original on June 9, 2022. Retrieved June 9, 2022.
32. Cumulative Sales of Honey or Spice:
    • "Circle Album Chart – Week 41, 2023". Circle Chart (in Korean). Archived from the original on October 19, 2023. Retrieved October 19, 2023.
    • "Circle Album Chart – Week 42, 2023". Circle Chart (in Korean). Archived from the original on October 26, 2023. Retrieved October 26, 2023.
    • "Circle Album Chart – Week 43, 2023". Circle Chart (in Korean). Archived from the original on November 2, 2023. Retrieved November 1, 2023.
33. Peak positions for single albums on Gaon Album Chart:
    • "Vanilla". Gaon Music Chart (in Korean). June 6–12, 2021. Archived from the original on June 17, 2021. Retrieved June 17, 2021.
    • "Light a Wish". Gaon Music Chart (in Korean). October 10–16, 2021. Archived from the original on October 21, 2021. Retrieved October 21, 2021.
34. "2021년 07월 Album Chart" [July 2021 Album Chart]. Gaon Music Chart (in Korean). Archived from the original on August 12, 2021. Retrieved August 12, 2021.
35. "2021년 11월 Album Chart" [November 2021 Album Chart]. Gaon Music Chart (in Korean). Archived from the original on December 9, 2021. Retrieved December 9, 2021.
36. Peaks on the Gaon Download Chart:
    • "Vanilla": "2021년 24주차 Download Chart" [Week 24 of 2021 Download Chart]. Gaon Music Chart (in Korean). June 6–12, 2021. Archived from the original on June 17, 2021. Retrieved June 17, 2021.
    • "Vanilla": "2021년 42주차 Download Chart" [Week 42 of 2021 Download Chart]. Gaon Music Chart (in Korean). October 10–16, 2021. Archived from the original on October 21, 2021. Retrieved October 21, 2021.
    • "Alive": "2022년 22주차 Download Chart" [Week 22 of 2022 Download Chart]. Gaon Music Chart (in Korean). May 22–28, 2022. Archived from the original on June 2, 2022. Retrieved June 2, 2022.
    • "Pose!": "Download Chart – Week 32 of 2024". Circle Chart (in Korean). Retrieved August 15, 2024.
37. Peak chart positions on World Digital Song Sales Chart:
    • "Vanilla". Billboard. June 20–26, 2021. Archived from the original on June 22, 2021. Retrieved June 24, 2021.
    • "Vivace". Billboard. October 24–30, 2021. Archived from the original on October 28, 2021. Retrieved November 6, 2021.
38. Vanilla (Single Album) (photobook). Lightsum. South Korea: Cube Entertainment, Kakao Entertainment. 2021. Credits.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
39. Light a Wish (Single Album) (photobook). Lightsum. South Korea: Cube Entertainment, Kakao Entertainment. 2021. Credits.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
40. @via_by_jimmy (May 24, 2022). "Lightsum (라잇썸) – 'Alive' M/V Release!". Retrieved October 27, 2023 – via Instagram.
41. @novvkim (October 11, 2023). "Lightsum – Honey or Spice". Retrieved October 27, 2023 – via Instagram.
42. LIGHTSUM 라잇썸 (Official YouTube Channel) (August 7, 2024). LIGHTSUM(라잇썸) - 'POSE!' Official Music Video. Retrieved August 7, 2024 – via YouTube.
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45. "[APMA 2021] 亚洲流行音乐大奖2021年度入围名单" [ Asian Pop Music Awards Shortlisted for 2021] (in Chinese). November 30, 2021. Archived from the original on November 30, 2021. Retrieved November 30, 2021 – via Weibo.
46. Hwang, Soo-yeon (November 19, 2022). "라잇썸, '2022 지니뮤직어워드' 뉴 웨이브 아이콘상 수상" [Lightsum won the New Wave Icon Award at the '2022 Genie Music Awards'] (in Korean). X-ports News. Archived from the original on September 18, 2023. Retrieved September 18, 2023 – via Naver.
47. Jeong, Ji-eun (December 28, 2021). "BTS부터 엔시티드림까지... 한터뮤직어워즈 아티스트상 수상!" [From BTS to NCT Dream... Hanteo Music Awards Artist Award!] (in Korean). KBS Entertainment News. Archived from the original on December 28, 2021. Retrieved September 18, 2023 – via Naver.
48. Lee, Min-ji (December 27, 2021). "임영웅→투모로우바이투게더, 2022 대한민국 퍼스트브랜드 대상" [Lim Young-woong → Tomorrow by Together, 2022 Korea's First Brand Grand Prize] (in Korean). Newsen. Archived from the original on December 27, 2021. Retrieved December 27, 2021 – via Naver.
49. "2021 Mnet Asian Music Awards Nominees". MAMA. Archived from the original on November 4, 2021. Retrieved November 4, 2021.
50. "31st High1 Seoul Music Awards – 모바일 투표 현황" [31st High1 Seoul Music Awards – Mobile Voting Status]. Seoul Music Awards (in Korean). Archived from the original on December 3, 2021. Retrieved December 5, 2021.

External links

• Official website (in Korean)

• 2021 establishments in South Korea
• K-pop music groups
• Musical groups established in 2021
• Musical groups from Seoul
• South Korean girl groups
• Cube Entertainment artists
• South Korean dance music groups