''' pg_midi_sound101.py  play midi music files (also mp3 files) using pygame  tested with Python273/331 and pygame192 by vegaseat  '''     import pygame as pg     def play_music(music_file):      '''      stream music with mixer.music module in blocking manner      this will stream the sound from disk while playing      '''      clock = pg.time.Clock()      try:          pg.mixer.music.load(music_file)          print("Music file {} loaded!".format(music_file))      except pygame.error:          print("File {} not found! {}".format(music_file, pg.get_error()))          return      pg.mixer.music.play()      # check if playback has finished      while pg.mixer.music.get_busy():          clock.tick(30)        # pick a midi or MP3 music file you have in the working folder  # or give full pathname  music_file = "Latin.mid"  #music_file = "Drumtrack.mp3"     freq = 44100    # audio CD quality  bitsize = -16   # unsigned 16 bit  channels = 2    # 1 is mono, 2 is stereo  buffer = 2048   # number of samples (experiment to get right sound)  pg.mixer.init(freq, bitsize, channels, buffer)     # optional volume 0 to 1.0  pg.mixer.music.set_volume(0.8)     try:      play_music(music_file)  except KeyboardInterrupt:      # if user hits Ctrl/C then exit      # (works only in console mode)      pg.mixer.music.fadeout(1000)      pg.mixer.music.stop()      raise SystemExit