One well ahead of our time with new style of serene art (9)
I believe the answer is:
easterner
'one well ahead of our time with new style' is the definition.
I can't tell whether this definition defines the answer.
'of serene art' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'serene'+'art'='sereneart'
'sereneart' with letters rearranged gives 'EASTERNER'.
Can you help me to learn more?
(Other definitions for easterner that I've seen before include "Opposite of westerner" , "One from the Orient" , "New Englander, for instance" , "resident of New Jersey?" , "Oriental person" .)