[4] The band disbanded after the departure of member Gaeul, but she made the transition to vocal soloist thanks to her mentor, Vibe's Yoon Minsu.

[5] In October 2012, she released her first album, 147.5, as a solo vocalist, a compilation of sad ballads with string arrangements and piano,[3] with the title referring to her diminutive height, reported as between 147.5 cm and 153 cm, or around 4 feet 10 inches to 5 feet tall.

[9] In November 2015, she released another EP, Soulmate, which includes duets with singers MIIII and Sejun Im.

In 2015, these included "Give Me A Hug" for Hello Monster, "Stay" for Oh My Ghost, "You" for Healer,[1] and "Darling You" for Oh My Venus,[2] a duet with Kim Tae-woo.

[15] On July 18, 2022, Ben announced that she was pregnant with her first child and gave birth to her daughter on February 1, 2023.