ret_extra = self.get_recursive_similar_artist()
if ret_extra:
# get them reorg to pick up best element
ret_extra = self.get_reorg_artists_list(ret_extra)
# tries to pickup less artist from extra art
ret_extra = self.get_recursive_similar_artist()
if ret_extra:
# get them reorg to pick up best element
ret_extra = self.get_reorg_artists_list(ret_extra)
# tries to pickup less artist from extra art