[10] They performed at a number of places, including the indie music venues in the Hongdae area near Hongik University in Seoul,[11] and for audiences of the older Korean generation,[12][13] releasing their first album on May 27, 2014.

[16] They often use one microphone for performances,[3] initially to imitate that era's girl groups, but later realizing the advantage when they found they could hear each other better, which helped them control the harmony balance.

[12] They were inspired by doo-wop, Motown, barbershop, and pop music that was created prior to the 1960s, and also by groups like The Andrews Sisters, The Chordettes, and The Ronettes,[10] to whom they have been compared.

[19] Shinae An Wheeler, the group's creator, producer, leader, guitarist, main composer and writer[13] was born July 30, 1986, in Seongnam.

[8] She graduated from the Seoul Institute of the Arts and started her professional music career at age fifteen as a backing vocalist for some of the S.M.

Between 2009 and 2012, she was a radio panelist, introducing Korean indie bands, on English language program "K-popular" on TBSeFM.

"[10] So Hee Park was born on April 10, 1991, in Suwon[8] She played piano since a very young age[20] and started studying modern contemporary music in 2011 at Sungshin Women's University.

[23] On January 29, "Sweet Lies", their first OST, on the album soundtrack for the Korean drama Prime Minister and I, was released.

[49][50] In April, they were selected by KOCCA as one of twelve musical teams, artists of various genres, to "introduce talented, passionate, young Korean musicians to overseas audiences,"[51] and performed at the K-Pop Night Out concert at Midem on June 6.

[68][69] Also, in March, they were again selected as one of the musical groups to act as hallyu representatives by KOCCA, and performed at The Great Escape Festival in Brighton and Hove, England which took place on May 19–21.

[14][73] On September 26, they released a single "Love Shoes", featuring Stuart Zender, former bass guitarist of British funk and acid jazz band Jamiroquai, who they met while performing at The Great Escape Festival.

Friedman, also, joined them in their Seongdong-gu studio in August to help produce the album, playing guitar and composing some of the songs.