Ryeowook sings Kyuhyun's 'At Gwanghwamun'

Super Junior Ryeowook sings Kyuhyun's hit song 'At Gwanghwamun' at Super Idol Chart Show.

During the ending credits of the program, Ryeowook bids goodbye to the viewers by trying out his vocals to fellow members' ballad song.

Kyuhyun and Ryeowook are part of main vocals of Super Junior so the latter didn't disappoint. Check it out below: