@abc.abstractmethod
def get_song_by_id(self, sid):
    '\n        Return a song by its identifier\n\n        sid: Song identifier\n        '
    pass
Return a song by its identifier

sid: Song identifier
@abc.abstractmethod
def get_song_by_id(self, sid):
    '\n        Return a song by its identifier\n\n        sid: Song identifier\n        '
    pass