The term STRADIVARIUS'S TEACHER is referring to Nicolo AMATI, a luthier from Cremona, Italy. He was a master violin maker and the teacher of Antonio Stradivari, who is widely considered to be the greatest violin maker of all time. AMATI was a member of the famous AMATI family of luthiers, which included his father Girolamo and his grandfather Andrea. He passed on his knowledge and techniques to Stradivari, who went on to become one of the most renowned violin makers in history.