There were a few teachers who just did not like me because of my face. Once, I was told to stand in the corner until I cheered up. The attitude was, 'Oh, for God's sake, what's the matter with him?' But it's just a natural expression. ↗
When you are studying jazz, the best thing to do is listen to records or listen to live music. It isn't as though you go to a teacher. You just listen as much as you can and absorb everything. ↗