Kuo had planned on majoring in violin at Toyo, but because his left pinkie was congenitally bent inward, he found it hard to press the strings. That defect also prevented him from performing as a pianist. But if he wanted to be a musician, playing the piano was essential.
在東洋音樂學校就讀期間，原本郭芝苑打算專攻小提琴，卻因左手小指先天向內彎曲，在按弦上有困難，也無法演奏鋼琴，但要走音樂這條路，彈鋼琴是必要的。