The group consists of total of fourteen former members: Jaekyung, Bini, Rana, Lee Sem, Sera, Eunji, Euaerin, Minha, Hyuna, Sungah, Gyeongree, Hyemi, Sojin, and Keumjo.

Then the group's single, "News", and its EP, Sweet Rendezvous, both earned a peak popularity position of six, and with additional new members the group came back with follow-up albums Wild, Dolls, Prima Donna and their digital single "Glue" which ranked at number four and nine.

[1] According to Star Empire CEO Shin Ju-hak, the group's line-up would rotate and its members would be active in fields including singing, acting and modeling.

[2] Through the show, Rana, Sera, Eunji, Lee Sem, Euarin, Jaekyung, Bini, Minha and Hyemi were chosen to be members of Nine Muses.

They released their first song "Give Me," a duet with Seo In-young for the soundtrack to Prosecutor Princess, on April 7, 2010.

[8] Later that month, the group performed in Japan for the first time, alongside boyband ZE:A, at the Seoul Train: Nine Muses & Friends concert in Tokyo.

[15] The group featured in a documentary called 9 Muses of Star Empire released in 2012 that chronicling their debut period.

[26] In June, it was revealed that Sera's contract was not renewed and she would be leaving the group to focus on solo activities and establish her own agency.

The group, which released the single "Knock," was composed of Gyeongree, ZE:A's Kevin and singer Sojin.

[36] On October 4, 2016, it was revealed that Hyuna wouldn't renew her contract at the end of month and she'd be withdrawing the group after six years.

[37] Nine Muses remained as a four-member group due to Sungah taking hiatus to pursue her work as a disk jockey.

[39][40][41] Nine Muses held second concert Re:Mine on July 29, 2017 at the Bluesquare Samsung Card Hall located in Yongsan.

[45][46] On January 2, 2019, Sungah stopped appearing in the "members" section of the 9muses website, so this automatically confirmed her departure from the group.

On February 10, 2019, it was announced that the group had disbanded nine years after debuting due to the expiration of Sojin, Keumjo and Hyemi’s contracts and two of the members graduating.