A highly skilled musician is called a virtuoso.
When Musicians write their own music it's called...Composing Music
a band, or an orchestra. it depends on what the musicians play.
there's no name for that.EDIT: Actually - a group of eight musicians is called an Octet ! Snakester1962 (Supervisor)
Guitarists and/or musicians
a quartet, i think
Artisan
Adept is a synonym for highly skilled. Able is another synonym for highly skilled.
conservatories
As a combined form, it is an adjective phrase. Highly is an adverb that modifies the adjective skilled.
The invisible barrier that exist when highly skilled women are continually denied promotions of high level position in an industry dominated by men is called the glass ceiling
You might say artisan, craftsman or master. Depending on the level of skill and demand for his work you might call him an artist.
She is highly skilled in martial arts.
adept
artinoxic
Adept.
A virtuoso is a person that is highly skilled in music or another artistic form. Which means that a piano virtuoso is a person that is highly skilled in playing the piano specifically.
The term skilled labor refers to work that can only be done by people who are highly trained.