What's the differences between expression and representation?
When you explain about what artists do (express or represent), how do you tell this kind of expressive people, especially about singers in English?
In additionally all artists express something they want to send message to people. How do you say those artists in other words? I know some of them are called "creaters" or "performers". But if you know anything else more huge meaning for all artists, could you please teach me!

Question

Answer

They are also called Celebrity's, they are famous people, who are well known over the country or nation!

You could say My favorite artists is ......... or Joe Jonas is a Celebrity!

The writing or letters of a song are call lyrics! You could say: The Lyrics from ,hello by Adele are amazing!

I found the lyrics from the song hello by Adele(example of an artist or celebrity), very impressive and poetic!

Now the difference between expression and representation is:

Express is : 
verb (used with object)
1.
to put (thought) into words; utter or state:
to express an idea clearly.
2.
to show, manifest, or reveal:
to express one's anger.
3.
to set forth the opinions, feelings, etc., of (oneself), as in speaking, writing, or painting:
He can express himself eloquently.

Represent:

represent vtr	(depict, reproduce)	representar⇒ vtr
 	
The abstract painting represents the artist's concept of motherhood.

represent vtr	(symbolize, embody)

represent [sb] vtr	(act on the behalf of, legally)	representar a vtr + prep
 	
Frank's lawyers will represent him.
 	A Frank lo representa su abogado.

Answer

I found the lyrics from the song hello by Adele(example of an artist or celebrity), very impressive and poetic!

Answer

The writing or letters of a song are call lyrics! 
You could say: The Lyrics from ,hello by Adele are amazing!

Answer

You could say My favorite artists is ......... or Joe Jonas is a Celebrity!

Answer

They are also called Celebrity's, they are famous people, who are well known over the country or nation!