Bada (, born February 28, 1980) is a South Korean singer and musical actress. Her birth name is Choi Sung-hee (\ucd5c\uc131\ud76c). Bada studied theater at Dankook University. The former lead vocal of the now-defunct S.E.S., Bada has released four solo albums and four singles. She won Best Actress at the 3rd The Musical Awards and has starred in ten musicals to date.