EXAGGERATED VIBRATO CAUSES UNSTABLE TONE.LISTEN TO SOME OF THE PIECES BY YALUN HELPS YOUR INTERPRETATON & RENDERING.ANYWAY,IT REMARKS YR PERSONAL FEATURES.
Thanks for your comment, as you said exaggated vibrato causes unstable tone, that's always my problem, it happens while I was really emotional, hard to control myself, in other way it becomes my trademark, I am kidding. Thanks again!