Saving MP3 Tags to Songs

[giddyhead]

Update:
Hello everyone. The following is my add tags to list and save attempt attempt:

from mutagen.easyid3 import EasyID3
from mutagen.mp3 import 
MP3 mtags=[] 

for root, dirs, files, in os.walk('C:\Users\mrdrj\Desktop\SJ\NASB - Copy\'): 
     for name in files: 
          if name.endswith(('.mp3', '.m4a', '.flac', '.alac')): 

tracks.append(name)  # Add Media Files

try: audio = EasyID3(root + '\' + name)

 mtags = audio['album'],    audio['bpm'],  audio['compilation'],  audio['composer'], audio['copyright'],  
            audio['encodedby'],    audio['lyricist'], audio['length'],
            audio['media'],    audio['mood'], audio['title'],    audio['version'],  audio['artist'],   audio['albumartist'],
            audio['conductor'],    audio['arranger'], audio['discnumber'],   audio['organization'], audio['tracknumber'],
            audio['author'],   audio['albumartistsort'],  audio['albumsort'],    audio['composersort'], audio['artistsort'],
            audio['titlesort'],   audio['isrc'], audio['discsubtitle'], audio['language'], audio['genre'],    audio['date'], 
            audio['originaldate'], audio['performer:*']
except TinyTagException:

print('Error')
audio.save()  #Save funtion works.

print(audio['albumartist']) # Test to see if it works and does

When ran I get the following errors: How can this be solved? Thanks

Traceback (most recent call last):
  File "C:\Users\mrdrj\Desktop\Desktop\pythonProject\New MP3 Tags.py", line 211, in <module>
    ain = audio['album'],    audio['bpm'],  audio['compilation'],  audio['composer'], audio['copyright'],    audio['encodedby'],    audio['lyricist'], audio['length'],   audio['media'],    audio['mood'], audio['title'],    audio['version'],  audio['artist'],   audio['albumartist'],  audio['conductor'],    audio['arranger'], audio['discnumber'],   audio['organization'], audio['tracknumber'],  audio['author'],   audio['albumartistsort'],  audio['albumsort'],    audio['composersort'], audio['artistsort'],   audio['titlesort'],    audio['isrc'], audio['discsubtitle'], audio['language'], audio['genre'],    audio['date'], audio['originaldate'], audio['performer:*']
  File "C:\Users\mrdrj\AppData\Local\Programs\Python\Python39\lib\site-packages\mutagen\easyid3.py", line 213, in __getitem__
    return func(self.__id3, key)
  File "C:\Users\mrdrj\AppData\Local\Programs\Python\Python39\lib\site-packages\mutagen\easyid3.py", line 120, in getter
    return list(id3[frameid])
  File "C:\Users\mrdrj\AppData\Local\Programs\Python\Python39\lib\site-packages\mutagen\_util.py", line 537, in __getitem__
    return self.__dict[key]
KeyError: 'TBPM'