A spokesperson from JYPE, JOO's record label, has stated that the young singer praises the members of Wonder Girls. In an interview with Newsen, JOO stated that: "Before I made my debut, the members of Wonder Girls were very helpful to me, and offered me a lot of advice. The 17-year-old talked especially fondly of Wonder Girls member Sun Ye. "She and I have become real close," JOO said. "I feel so strong when I'm with her." The singer spoke of how the Wonder Girls and her got close while practicing their routines in the same practice rooms. However, JOO admitted that when she saw how popular the "Tell Me" dance got, she got a little jealous. Despite her thoughts on the girl group Wonder Girls, JOO herself is becoming quite a success with her first single, "Because of a Man." The solo singer that Park Jin Young had trained and molded, kept the singer under the wraps, and on January 10, she debuted with her first single album "Young Woman."