======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '200'
                                          'artist'  'The Clash'
                                     'text_people'  ''
                                         'release'  'London Calling'
                                           'title'  'London Calling'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['punk rock', 'classic rock', 'punk', 'british', 'rock']"
                                     'discogstags'  "['rock', 'new wave', 'punk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '19'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk;rock-cppex'
                                             'bpm'  '134'
                                             'key'  '9A'
                                        'acoustid'  '8e0ec34c-44d2-4ce7-b5c8-fb2e603447a4'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:{\x11\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x11\x00\x00')
'PRIV:PeakValue:¡s\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1s\x00\x00')
'TALB' (Album/Movie/Show title)                     'London Calling'
'TBPM' (BPM (beats per minute))                     '134'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-punk', 'rock-cppex']
'TDOR' (Original release time)                      '1979'
'TDRC' (Recording time)                             '1999-10-01'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Guy Stevens'], ['engineer', 'Bill Price'], ['membranophone', 'Topper Headon'], ['vocals', 'Paul Simonon'], ['vocals', 'Joe Strummer'], ['bass guitar', 'Paul Simonon'], ['guitar and piano', 'Mick Jones'], ['guitar and piano', 'Joe Strummer']])
'TIT2' (Title/songname/content description)         'London Calling'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '200000'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Clash'
'TPE2' (Band/orchestra/accompaniment)               'The Clash'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Columbia'
'TRCK' (Track number/Position in set)               '1/19'
'TSO2'                                              'Clash, The'
'TSOP' (Performer sort order)                       'Clash, The'
'TSRC' (ISRC (international standard recording code))  'GBARL1200161/GBARL1200680/GBBBN7902002'
'TXXX:ASIN'                                         'B00002MVQO'
'TXXX:Acoustid Id'                                  '8e0ec34c-44d2-4ce7-b5c8-fb2e603447a4'
'TXXX:Artists'                                      'The Clash'
'TXXX:BARCODE'                                      '5099749534728'
'TXXX:CATALOGNUMBER'                                '495347 2'
'TXXX:MusicBrainz Album Artist Id'                  '8f92558c-2baa-4758-8c38-615519e9deda'
'TXXX:MusicBrainz Album Id'                         '174a5513-73d1-3c9d-a316-3c1c179e35f8'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '8f92558c-2baa-4758-8c38-615519e9deda'
'TXXX:MusicBrainz Release Group Id'                 '8d73e45e-7ca1-3cb4-ae28-6da76196c17c'
'TXXX:MusicBrainz Release Track Id'                 '7236464a-6646-3c55-97f8-9b8c5dc1b18a'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'new wave', 'punk']
'TXXX:lastfmtags'                                   ['punk rock', 'classic rock', 'punk', 'british', 'rock']
'TXXX:originalyear'                                 '1979'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.81 dB'
'TXXX:replaygain_track_peak'                        '0.639558'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8f7f788e-131e-406e-8276-84a0a9f04fa0')

========================== row from database ==========================
                                              'id'  1421173
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/The Clash - Clash/London calling/Clash - Fiction.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  200
                                           'genre'  rock-gr-punk;rock-cppex
                                        'filesize'  4899355
                                           'mtime'  1676038859
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner calling Fiction rock gr punk;rock cppex
                                      'tag_artist'  The Clash
                                     'tag_release'  London Calling
                                       'tag_title'  London Calling
                                             'bpm'  134.0
                                    'search_title'  'calling':2 'london':1
                                   'search_artist'  'clash':2 'the':1
                                  'search_release'  'calling':2 'london':1
                                     'search_rest'  'calling':5 'cppex':13 'fiction':6 'garage':2 'gr':8 'punk':1,9,11 'rock':7,10,12 'stoner':4 'surf':3
                                    'search_combo'  'calling':2A,6C,11 'clash':4B 'cppex':19 'fiction':12 'garage':8 'gr':14 'london':1A,5C 'punk':7,15,17 'rock':13,16,18 'stoner':10 'surf':9 'the':3B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', 'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['punk rock', 'classic rock', 'punk', 'british', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'new wave', 'punk']

============================== file details ==============================
                                           'mtime'  1676038858.8995187  (2023-02-10 15:20:58)
                             'size'  4899355