Hear pal upset painter (7)
I believe the answer is:
raphael
'painter' is the definition.
(I've seen this before)
'hear pal upset' is the wordplay.
'upset' indicates an anagram.
'hear'+'pal'='hearpal'
'hearpal' is an anagram of 'RAPHAEL'.
(Other definitions for raphael that I've seen before include "responsible for many religious works" , "Italian artist" , "Angel; Italian painter" , "Archangel - artist" , "A Renaissance artist" .)