On the May 28th episode of SBS's 'Jung Jae Hyung and Lee Hyori's You & I', soloist Kim Jo Han talked about his experience as a vocal trainer for idols.
When asked who he trained, Kim Jo Han replied, "I've taught Girls' Generation's Jessica and Taeyeon, as well as SISTAR's Hyorin, among others." Jung Jae Hyung asked again, "There must be singers who come to you because they aren't very good at singing, but also singers that are already good but want more reinforcement?"
Kim Jo Han chose Jessica as an example, explaining, "Jessica is a great singer, but she had a weak voice at first because she wasn't confident. She gained a lot of confidence after our training and now sings up to her full potential."
On 2AM's Jo Kwon, he also expressed, "I call him a machine because he works so hard."
Source + Photos: Newsen via Nate