def download(self, song):
		"""Download a song from a Google Music library.

		Parameters:
			song (dict): A song dict.

		Returns:
			tuple: Song content as bytestring, suggested filename.
		"""

		song_id = song['id']

		response = self._call(
			mm_calls.Export,
			self.uploader_id,
			song_id)
		audio = response.body
		suggested_filename = unquote(
			response.headers['Content-Disposition'].split("filename*=UTF-8''")[-1]
		)

		return (audio, suggested_filename)
Download a song from a Google Music library.

		Parameters:
			song (dict): A song dict.

		Returns:
			tuple: Song content as bytestring, suggested filename.