The sound is now a little bit closer to pop-music sound. Melodies are richer, more flexible. The Mediterranean music is touching, roundish. It doesn't have those acute angles of Western music. But Western people usually can hardly perceive these quarter tones.
Every sound exists in nature.
It was the man who divided sounds into notes. And it is impossible to say that some of the sounds are right sounds while others are not. Senses that hide behind are the only important thing. Yes, I have two apprentices, who come to my place. I try to take as little money as possible because I want to share everything I know with them.