code: def get_artist_songs(self, id_, sort='title', per_page=20, page=1):
          
          endpoint = "artists/{id}/songs".format(id=id_)
          params = {'sort': sort, 'per_page': per_page, 'page': page}
          return self._make_request(endpoint, params_=params)
docs: Documents (songs) for the artist specified.