A vocal music professor said that the most important thing in learning music is the sense of music and understanding. What do you mean by sense of music and understanding? She said her voice had better be better, I think the so-called understanding means that after the teacher tells you something very abstract in vivid language, you can correctly understand the teacher's intention. For example, if the teacher says that the voice is in front or behind, you can do it immediately after listening to the teacher's explanation or demonstration. This is understanding.