Highlight's main vocalist Yoseob surprised viewers by revealing he still takes vocal lessons.
On the June 20 airing of MBC's 'Radio Star', MC Kim Gu Ra asked if Yoseob still takes vocal lessons. The idol answered, "Yes", and explained, "I stopped taking lessons for a while because I was full of myself but about a year or two ago, I realized that vocal cords are muscles too and that I have to keep using it. So I take lessons when I'm free."
MC Cha Tae Hyun asked, "You're already a good singer. Does it help with training?" Yoseob replied, "They say you become an expert in a field if you dedicate 10,000 hours to it. I think it's all about how well you spend that 10,000 hours."
MC Yoon Jong Shin agreed, and complimented the idol, saying, "Yoseob is looking ahead. It's the best to be able to long-run."