Bubble Sisters is a South Korean female vocal group that debuted on February 9, 2003, with their first album Bubble Sisters and the title track "Bubble Song". Initially composed of Seo Seung-hee, Kang Hyun-jung, Kim Su-yeon, and Kim Young-ji, the group was often compared to Big Mama for their powerful vocals. Despite early controversy surrounding their stage makeup during "Bubble Song" promotions, they gained recognition with hits like "Nightmare" and "Men Come Down from the Sky Like Rain", a remake of "It’s Raining Men". Following lineup changes in 2005, Bubble Sisters released their second album, Ready for Soul (2006), and continued to evolve with albums like Dramatic Episode (2007) and Traces of Love (2018). New member Rangshow joined in 2013, helping revitalize the group. They remained active, participating in music competitions like King of Mask Singer and releasing music with heartfelt themes, such as "It’ll Be Fine" (2020), dedicated to those affected by COVID-19 and natural disasters. Now consisting of Seo Seung-hee, Kang Hyun-jung, Rangshow, and Jiyoung, Bubble Sisters continues to make music, with their latest single "Easy" released in 2025, marking a new chapter in their two-decade career.
