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Lightsum
South Korean girl group From Wikipedia, the free encyclopedia
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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. Originally an eight-piece ensemble, members Huiyeon and Jian departed the group in October 2022. The group debuted on June 10, 2021, with the release of their debut single album, Vanilla.
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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".[1]
History
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2017–2020: Pre-debut activities
Juhyeon participated in The Unit: Idol Rebooting Project in 2017–2018 where she finished in 25th place.[2] Chowon, Nayoung, and Yujeong participated in Produce 48 in 2018 where they finished in 13th place, 21st place, and 51st place respectively.[3][4][5] It was later revealed that Chowon was rigged out of the lineup of Iz*One, and that her real final ranking was 6th place.[6] Juhyeon later participated in Dancing High in 2018, but did not pass the evaluation round.[7] Chowon was cast in Bully Bad Guys and The Dominator 3: Junior Bullies in 2020.[8]
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.[9] The members were revealed in pairs from April 19 to 22 (in order: Juhyeon, Sangah, Chowon, Jian, Nayoung, Huiyeon, Hina, and Yujeong).[10][11][12][13] A video trailer with all eight members was revealed on April 23, 2021.[14][15] On May 27, it was announced that Lightsum would release their debut single album Vanilla on June 10,[16] making their broadcast debut on Mnet's M Countdown with a performance of their debut single.[17] On October 13, Lightsum released their second single album Light a Wish, with "Vivace" serving as the lead single.[18]
On May 24, 2022, Lightsum released their first extended play Into the Light, with the lead single "Alive".[19] 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.[20]
On May 5, 2023, it was reported that Lightsum is currently under preparations for a comeback in the first half of 2023.[21] On June 7, Sangah participated in Mnet's girl group survival show Queendom Puzzle as a contestant.[22] she was eliminated in the first elimination rounds.[23] On September 18, it was announced that they would have their comeback in the second week of October with their second mini album.[24] On September 21, it was announced Lightsum would release their second extended play Honey or Spice on October 11.[25] 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.[26]
On July 31, 2024, the group released a teaser for their first digital single "Pose!", set for release on August 7.[27] On August 3, the group released a concept photos for the digital single.[28] On August 7, Lightsum released the digital single "Pose!" 10 months after their previous comeback.[29]
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Members
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Timeline

Discography
Extended plays
Single albums
Singles
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Videography
Music videos
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Awards and nominations
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References
External links
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