m = hashlib.md5()
    m.update(sid_data)
    m.update(struct.pack("<H", sid_header[HDR_INITADDRESS]))
    m.update(struct.pack("<H", sid_header[HDR_PLAYADDRESS]))
    m.update(struct.pack("<H", sid_header[HDR_SONGS]))
    for i in range(sid_header[HDR_SONGS]):
        if sid_header[HDR_SPEED] & (1<<i):
            m.update(chr(60))
        else:
            m.update(chr(0))

    m = hashlib.md5()
    m.update(sid_data[2:])
    m.update(struct.pack("<H", sid_header[HDR_INITADDRESS]))
    m.update(struct.pack("<H", sid_header[HDR_PLAYADDRESS]))
    m.update(struct.pack("<H", sid_header[HDR_SONGS]))
    for i in range(sid_header[HDR_SONGS]):
        if sid_header[HDR_SPEED] & (1<<i):
            m.update(chr(60))
        else:
            m.update(chr(0))

    sid_header = unpack_header(data)
    sid_version = sid_header[HDR_VERSION]
    sid_data = data[sid_header[HDR_DATAOFFSET]:]
    m = hashlib.md5()
    m.update(sid_data[2:])
    m.update(struct.pack("<H", sid_header[HDR_INITADDRESS]))
    m.update(struct.pack("<H", sid_header[HDR_PLAYADDRESS]))
    m.update(struct.pack("<H", sid_header[HDR_SONGS]))
    for i in range(sid_header[HDR_SONGS]):
        if sid_header[HDR_MAGIC] == "RSID":
            m.update(chr(60))
        else:
            if sid_header[HDR_SPEED] & (1<<min(i, 31)):
                m.update(chr(60))
            else:
                m.update(chr(0))
    if sid_version == 2:
        if (sid_header[HDR_FLAGS] & 0x0c) == 0x08:
            m.update(chr(2))

/MUSICIANS/J/JCH/Tecnetium.sid
{'COMM': 'I always get mixed feelings when I play this
  music. The title- tune is\nlong and I put a lot of work
  into it in april 1989, but today I can\nhear loads of
  harmonic errors here and there. The game was done for
  a\nsideways shoot\'em up which a couple of totally
  unknown danish guys was\nmaking. They soon lost all
  interest in their game, however. The\nhiscore theme was a
  conversion of the old Cliff Richard
  hit\n"Congratulations" done right out my head. I always
  wanted to make such\na hiscore tune, because I always
  thought Rob Hubbard did it all wrong\nwhen he made "sad"
  hiscore tunes. It is a sad thing when the game\nends, but
  getting a high score is supposed to be a GOOD thing! :)',
 'TUNS': [{'LENG': 23330816, 'NAME': 'Title Screen'},
          {'ARTI': 'Cliff Richard',
           'LENG': 5963776,
           'TITL': 'Congratulations'},
          {'LENG': 262144},
          {'LENG': 196608},
          {'LENG': 2883584},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 196608, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 196608, 'LOOP': 'G'},
          {'LENG': 131072, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'},
          {'LENG': 65536, 'LOOP': 'G'}]}