1. Moon Byul-yi, known professionally as Moonbyul, is a South Korean rapper and songwriter under RBW Entertainment.

1. Moon Byul-yi, known professionally as Moonbyul, is a South Korean rapper and songwriter under RBW Entertainment.
Moonbyul is a member of the South Korean girl group Mamamoo and its sub-unit Mamamoo+.
Moonbyul made her solo debut in May 2018 with the digital single Selfish.
Moonbyul decided to pursue singing after receiving positive feedback during a school performance.
Moonbyul cited Girls' Generation and their leader Taeyeon as early influences on her career aspirations, and attended SM Entertainment's academy in an attempt to follow in her footsteps.
Moonbyul graduated from Wonmi High School, and later from the Paekche Institute of the Arts majoring in media, music and vocals.
Moonbyul uses the alias Moonstaras her rap name, which directly translates the meaning of her Korean name into English.
Moonbyul debuted as a member of the girl group Mamamoo on June 19,2014, with the release of their first extended play Hello.
Since the release of their second extended play Piano Man in November 2014, Moonbyul has co-written many of the group's lead singles, including the entirety of her own raps.
Moonbyul wrote the song based on her own past relationship, conveying the heartbreak of feeling alone even while the other person was there.
In May 2018, Moonbyul made her solo debut with the digital single "Selfish," featuring Seulgi of Red Velvet.
Moonbyul released her first EP, "Dark Side of the Moon," on February 14,2020.
Billboard commended the release for continuing Mamamoo's legacy of relaying different ideas of feminine strength through their music, adding praise to Moonbyul for being "Billboard noted her use of diverse genres and performance styles".
In July 2020, Moonbyul was appointed as a host for the weekly radio program Avengirls on Naver NOW.
Moonbyul composed and wrote the theme song for the show herself.
In May of the same year, Moonbyul was awarded at 2022 Korea Brand Customer Loyalty Index for her work as a host in the live broadcasting category.
On December 20,2021, Moonbyul launched her YouTube channel, "moonbyul2da".
On January 19,2022, Moonbyul released her third EP, 6equence.
Moonbyul stated in the run-up to 6equence's release that she hopes to challenge the binary view of gender through her music, reflected in her androgynous musical style and gender-neutral lyrics.
Moonbyul held two shows from her first overseas solo concert Director's Cut: Japan Special Live in Osaka, Japan on August 20,2022.
From August to November 2022, Moonbyul participated in and won the JTBC survival program The Second World, a competition where rappers from K-pop girl groups engaged in a vocal performance contest.
On January 7,2023, Moonbyul performed at the 37th Golden Disc Awards, following her victory in the competition show "The Second World", performing her songs On My Way and Comma.
Moonbyul joined the judging panel of JTBC's boy group survival program Peak Time in February 2023, replacing Mino of Winner.
Moonbyul embarked on her first solo world tour, Museum: An Epic of Starlit with shows in Seoul, Taipei, Singapore, Hong Kong, Kaohsiung, Osaka, Tokyo and Macau.