def fetch_shared_playlist(self, playlist_id, terr=KKBOXTerritory.TAIWAN):
        '''
        Fetches a shared playlist by given ID.

        :param playlist_id: the playlist ID.
        :type playlist_id: str
        :param terr: the current territory.
        :return: API response.
        :rtype: dictcd

        See `https://docs-en.kkbox.codes/v1.1/reference#sharedplaylists-playlist_id`.
        '''
        url = 'https://api.kkbox.com/v1.1/shared-playlists/%s' % playlist_id
        url += '?' + url_parse.urlencode({'territory': terr})
        return self.http._post_data(url, None, self.http._headers_with_access_token())