======================== unified (from filesystem) ========================
                                         'bitrate'  '232.943'
                                        'duration'  '286'
                                          'artist'  'Motörhead'
                                     'text_people'  'Philip Anthony Campbell'
                                         'release'  'Inferno'
                                           'title'  'Keys to the Kingdom'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']"
                                     'discogstags'  "['rock', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '12'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '93'
                                             'key'  '2A'
                                        'acoustid'  'fc70cbcb-58a5-4f04-80a9-44c14dc1c137'
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Inferno'
'TBPM' (BPM (beats per minute))                     '93'
'TCOM' (Composer)                                   'Philip Anthony Campbell'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-heavy'
'TDOR' (Original release time)                      '2004'
'TDRC' (Recording time)                             '2004-06-22'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['background vocals', 'Philip Campbell'], ['harmonica', 'Lemmy Kilmister'], ['membranophone', 'Mikkey Dee'], ['vocals', 'Lemmy Kilmister'], ['electric bass guitar', 'Lemmy Kilmister'], ['guitar', 'Philip Campbell'], ['guitar', 'Lemmy Kilmister']])
'TIT2' (Title/songname/content description)         'Keys to the Kingdom'
'TKEY' (Initial key)                                '2A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Motörhead'
'TPE2' (Band/orchestra/accompaniment)               'Motörhead'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Sanctuary Records'
'TRCK' (Track number/Position in set)               '10/12'
'TSO2'                                              'Motörhead'
'TSOP' (Performer sort order)                       'Motörhead'
'TSRC' (ISRC (international standard recording code))  'GBAJE0400496'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:ASIN'                                         'B000294SFW'
'TXXX:Acoustid Id'                                  'fc70cbcb-58a5-4f04-80a9-44c14dc1c137'
'TXXX:Artists'                                      'Motörhead'
'TXXX:AverageLevel'                                 '8827'
'TXXX:BARCODE'                                      '060768524125'
'TXXX:CATALOGNUMBER'                                '06076-85241-2'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '0'
'TXXX:MusicBrainz Album Artist Id'                  '57961a97-3796-4bf7-9f02-a985a8979ae9'
'TXXX:MusicBrainz Album Id'                         '169c583d-4e30-43ad-90bb-778e131f6c80'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '57961a97-3796-4bf7-9f02-a985a8979ae9'
'TXXX:MusicBrainz Release Group Id'                 '0b4ec2a1-c8fe-4dd0-a0b1-d2926a85be15'
'TXXX:MusicBrainz Release Track Id'                 '9d9bfbc0-7a8d-33d6-861d-de66a72eab0a'
'TXXX:PeakValue'                                    '32673'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:WM/EncodingTime'                              '1444043136'
'TXXX:WM/MediaPrimaryClassID'                       '{D1607DBC-E323-4BE2-86A1-48A42A28441E}'
'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '6'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R   695673;AMGp_id=P     4965;AMGt_id=T  7074439'
'TXXX:WM/Year'                                      '2004'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '11.0.5721.5145'
'TXXX:discogstags'                                  ['rock', 'heavy metal']
'TXXX:lastfmtags'                                   ['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']
'TXXX:originalyear'                                 '2004'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.07 dB'
'TXXX:replaygain_track_peak'                        '0.359550'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'167e0f3d-b733-40c7-a7f3-a38d5c8c290e')

========================== row from database ==========================
                                              'id'  1402134
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Motörhead - Motorhead/Inferno/10 Keys to the Kingdom.wma.mp3
                                         'working'  None
                                         'bitrate'  232
                                    'duration_sec'  286
                                           'genre'  eid-metal-heavy
                                        'filesize'  8429433
                                           'mtime'  1620311090
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Motorhead 10 Kingdom.wma eid metal heavy
                                      'tag_artist'  Motörhead
                                     'tag_release'  Inferno
                                       'tag_title'  Keys to the Kingdom
                                             'bpm'  93.0
                                    'search_title'  'keys':1 'kingdom':4 'the':3 'to':2
                                   'search_artist'  'motorhead':1,2
                                  'search_release'  'inferno':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':7 'heavy':9 'kingdom':4 'kingdomwma':6 'metal':8 'motorhead':3 'wma':5
                                    'search_combo'  '00dwimp':8 '00metal':9 'eid':14 'heavy':16 'inferno':7C 'keys':1A 'kingdom':4A,11 'kingdomwma':13 'metal':15 'motorhead':5B,6B,10 'the':3A 'to':2A 'wma':12
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']
                                        'tag_date'  2004
                                     'discogstags'  ['rock', 'heavy metal']

============================== file details ==============================
                                           'mtime'  1620311090.0216317  (2021-05-06 16:24:50)
                             'size'  8429433