He is a tea ceremony master.
As a child, I was strictly taught by my piano teacher.
stable master
Sumo term for the master of a training stable.
See also: 親方
That sumo wrestler became stronger under the guidance of his stable master.
He became the apprentice of a famous master.
I learned the art of rakugo from my master.
The disciples called him 'master'.
She has a master who teaches her the tea ceremony.