CSR (첫사랑/Cheos-Sarang, formerly known as 05class) is a 7 member girl group under Pop Music. They debuted on July 27, 2022 with the mini album Sequence : 7272. Their concept is a class of young girls who were born in 2005.
In 2019, J Planet Entertainment opened SNS accounts for their new upcoming girl group '05Class', then consisting of members Sua, Seoyeon, Yeham, Dahyun and Taehee. However, Dahyun and Taehee departed from the group in February of 2020. Geumhee was added to the lineup in April 2020, and Duna joined in December 2020. On January 7, 2022, they introduced two new members, Sihyeon and Yuna.
During this time, Yoonjung, Gaeun, Sona, and Naeun were also added to the lineup, but all four withdrew shortly after being added.
July, 2022: Debut with Sequence : 7272
On July 8, 2022, the group's name was revealed to be 첫사랑 (CSR), meaning “first love”, and the group's official SNS accounts were opened. It was also determined that the group will be debuting under A2Z Entertainment (also known as Pop Music before) instead of J Planet Entertainment.
In the following days, two debut trailers were released, before a schedule poster, posted on July 11, confirmed the release of their first mini album Sequence : 7272, scheduled for July 28. The group debuted a day prior with the release of the music video for the title track, "Pop? Pop!".
This album have First Love as their theme.
November, 2022: 1st Comeback with Sequence : 17& and Official Fandom Name
The group are having their very first comeback on November 17, 2022 with single album Sequence: 17&. That single album contains 2 song, with the "러브티콘 (♡TiCON)" (re: Loveticon) as their title track. On the day of their comeback showcase, they also announcing their official fandom name, Maeum (마음) which means "Heart".
This album is the continuation of Sequence : 7272 filled with their story of having a first love and a never-ending friendship.
December, 2022: First Music Show Win and Special Award
On December 2, 2022, the group got their first music show win on Music Bank with their "Loveticon".
February 21 - Vocal Stage of BOL4's 나의 사춘기에게 (by Duna, Soyeon)
February 28 - Dance Stage of Boygroups medley: SHINee's Replay, NCT Dream's My first and Last, EXO's Love Me Right, TXT's Crown and Seventeen's Mansae (by all members)
On March 29, they had their 2nd comeback with a mini album titled "DELIGHT" and "Shining Bright" as their title track. This album are filled with 4 tracks.
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VII. Trivia
CSR's Official Fandom and Logo
A documentation of their moment when CSR announced as one of the music bankwinner nominees
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