Lightsum: Perbedaan antara revisi

Pada 15 April, Cube Entertainment mengumumkan bahwa mereka akan melangsungkan debut grup vokal wanita baru, pertama kalinya sejak debut [[(G)I-dle|(G)I-DLE]] pada tahun 2018.<ref>{{cite web|title=큐브 새 걸그룹 'LIGHTSUM(라잇썸)', 로고 공개...본격 데뷔 시동|url=https://entertain.naver.com/read?oid=052&aid=0001575564|website=YTN|language=ko|author=Ji Seung-hoon|date=15 April 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210419144933/https://entertain.naver.com/read?oid=052&aid=0001575564|archive-date=19 April 2021|url-status=live}}</ref> Para anggota diungkapkan secara bertahap, dua anggota setiap harinya, sejak 19 April hingga 22 April.<ref>{{cite web|title=큐브 신인 라잇썸, 멤버 주현X상아 프로필 공개|url=https://entertain.naver.com/read?oid=382&aid=0000904431|website=Sports Donga|language=ko|author=Jeon Hyo-jin|date=19 April 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210419145308/https://entertain.naver.com/read?oid=382&aid=0000904431|archive-date=19 April 2021|url-status=live}}</ref><ref>{{cite web|title=큐브 新걸그룹 라잇썸, 두 번째 프로필 공개..'프듀48' 한초원 멤버 확정 [공식]|url=https://entertain.naver.com/read?oid=109&aid=0004390637|website=Osen|language=ko|author=Ji Min-kyung|date=20 April 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210420032859/https://entertain.naver.com/read?oid=109&aid=0004390637|archive-date=20 April 2021|url-status=live}}</ref><ref>{{cite web|title=큐브 엔터 새 그룹 '라잇썸' 나영·휘연, 얼굴 공개|url=https://entertain.naver.com/read?oid=144&aid=0000731758|website=Sports Kyunghyang|language=ko|author=Lee Sun-myeong|date=21 April 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210421004303/https://entertain.naver.com/read?oid=144&aid=0000731758|archive-date=21 April 2021}}</ref><ref>{{cite web|title=[공식] '큐브 新 걸그룹' 라잇썸, '프듀48' 유정-히나 공개|url=https://entertain.naver.com/read?oid=076&aid=0003719757|website=Sports Chosun|language=ko|author=Baek Ji-eun|date=22 April 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210423005729/https://entertain.naver.com/read?oid=076&aid=0003719757|archive-date=23 April 2021|url-status=live}}</ref> Sebuah video ''trailer'' yang menampilkan kedelapan anggota dirilis pada 23 April 2021.<ref>{{cite web|title=LIGHTSUM(라잇썸) - PROFILE FILM : LIGHTSUM|url=https://www.youtube.com/watch?v=aQu_WKlERBY|website=YouTube|publisher=Cube Entertainment|date=22 April 2021|access-date=27 Mei 2021|archive-date=1 Mei 2021|archive-url=https://web.archive.org/web/20210501154726/https://www.youtube.com/watch?app=desktop&v=aQu_WKlERBY&feature=youtu.be|url-status=live}}</ref><ref>{{cite web|title=큐브 新 8인조 걸그룹 라잇썸, 단체 프로필 공개 '데뷔 초읽기'|url=https://entertain.naver.com/read?oid=609&aid=0000432243|website=Newsen|language=ko|author=Lee Min-ji|date=23 April 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210423010613/https://entertain.naver.com/read?oid=609&aid=0000432243|archive-date=23 April 2021|url-status=live}}</ref> Pada 27 Mei, diumumkan bahwa LightsumLIGHTSUM akan merilis single album singelpertama mereka berjudul ''Vanilla'' pada 10 Juni.<ref>{{cite web|title='큐브 신인' 라잇썸, 6월 10일 데뷔 확정..'Vanilla' 아트워크 티저 오픈 [공식]|url=https://entertain.naver.com/read?oid=109&aid=0004413045|website=Osen|language=ko|author=Lee Seung-Hoon|date=27 Mei 2021|access-date=27 Mei 2021|archive-url=https://web.archive.org/web/20210527055958/https://entertain.naver.com/read?oid=109&aid=0004413045|archive-date=27 Mei 2021|url-status=live}}</ref> Mereka melangsungkan debut di acara musik [[Mnet]] ''[[M Countdown]]'' pada 10 Juni, di mana mereka menampilkan singel debut mereka.<ref>{{cite web|title=큐브 신인 라잇썸, '엠카'서 성공적 데뷔 무대...상큼+발랄|url=https://entertain.naver.com/read?oid=421&aid=0005408225|website=News1|language=ko|author=Kim Min-ji|date=11 Juni 2021|access-date=12 Juni 2021|archive-date=12 Juni 2021|archive-url=https://web.archive.org/web/20210612071939/https://entertain.naver.com/read?oid=421&aid=0005408225|url-status=live}}</ref>