def parse_song(self, song_lines, song_key, octave_shift):
if isinstance(
song_lines,
str): # Break newlines and make sure the result is a List
song_lines = song_lines.split(os.linesep)
english_song_key = self.english_note_name(song_key)
note_shift = self.get_note_parser().get_base_of_western_major_scale(
) * octave_shift
# Parses song line by line
song = Song(maker=self.get_maker(), music_key=english_song_key
) # The song key must be in English format
for song_line in song_lines:
instrument_line = self.parse_line(
song_line, song_key,
note_shift) # The song key must be in the original format
song.add_line(instrument_line)
return song
