Personally, I pay particular attention to the vocal and melody - how they fit together to convey the message and feeling of the song to the audience and connect with them on an emotional level. Of course, lyrics and arrangement are of great importance in affecting the process of this delivery too.
Thank you so much for your support!過獎了!Haha, I am not sure if I can be considered "自学", as I received formal training in classical piano-playing since childhood - although the composing aspect was informally acquired by myself:)
I love the songs written by you, but have never imagined that you are such a great judge. You have watched the candidates' previous performances when before being one of the judge. I appreciate your effort and preparation and hope to see you more in the forthcoming episodes.
Wow, thanks for your comments! I did some "homework" in advance in reviewing their previous performances as I hoped to consider their progress when giving them feedback:)