Onew The One I Cant Let Go, When he was 16 or 17 year old, trainee boy

I ve listened to this song, some part edited, on YT. So, then, I thought, why not sharing full version of it with you all. Btw, he recorded this in SM Academy. Many int fans think he was 17 at that time, but 16 is closer unless he did within on Dec 14th31th in 2006. Image source Naver, Tumblr, Onew private sites and etc, etc.