SEE ALSO: Ga In and Lee Hyori share BTS video of the two divas in the studio for 'Black & White'

Ga In shared during her interview with Star News, "It seemed like she really returned to her beginner mindset... I was able to feel the hard work and devotion she put into it."

"Although I wasn't originally friends with [Lee Hyori] unni, I heard that she is writing songs these days, and I was half-in-doubt that she would really do it for me... But it came to be unni's first production... The recording was already completed before SPICA's song... The song is sort of like 'Dr. Jekyll and Mr. Hyde' and like 'Miss Korea', it definitely has unni's unique color."

"Maybe because it was her first time, but I could really feel her sincere devotion to the song... She directly came to me and took part in directing every small detail, including the session and chorus. It wasn't, 'We're going to get by with Lee Hyori's name as a celebrity we all know,' but it really felt like she went back to the beginning mindset."

"The standards to determine whether someone sings well or not depends on the person, but I think the aura of unni's voice is really impressive... She has something in her tone that immediately sets the mood... It is something that no one else can imitate... I thought that I want to learn a lot from her and be like her."

Ga In worked with big names for her new mini album 'Truth or Dare' through which she's showing an upgraded sexy sound and concept!