After the musician has learned all that is required, and mastered his instrument, he must then find some music worthy of his knowledge and skills.
In the jazz idiom, music is derived from human relations and expressions; in other words the society in which we live provides the inspiration for the music; without this, where does the musician go for his music. Does he look inside his head? Without additional external stimuli and action, he won't find much material. In all generations, the society at large provided the inspiration for the music; the music is a reflection of a particular society, it is nothing more than a mirror.
I pose this question, "Can anyone present music that is a reflection of today's society?"