Half of Sicily follows Greek character creating this art form (5)
I believe the answer is:
music
'art form' is the definition.
(I know that music is a art form)
'half of sicily follows greek character' is the wordplay.
'half of' means to take half the letters.
'follows' is a charade indicator (letters next to each other).
'greek character' becomes 'mu' (letter from the Greek alphabet).
'sicily' cut in half is 'sic'.
'sic' after 'mu' is 'MUSIC'.
'creating this' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for music that I've seen before include "Country, say" , "Composer's product" , "Shakespeare: 'If . . . . . be the food of love, play on'" , "Sounds produced by musical instruments" , "Orsino's food of love (Twelfth Night)" .)