======================== unified (from filesystem) ========================
                                         'bitrate'  '227.252'
                                        'duration'  '228'
                                          'artist'  'Erik Satie; Reinbert de Leeuw'
                                     'text_people'  'Erik Satie'
                                         'release'  'The Early Piano Works'
                                           'title'  "Pièces froides No. 1, Airs à faire fuir : III. S'inviter"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '17'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '118'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:Retouched and rescaled (square) image for tagging'  type PictureType.COVER_FRONT (Cover (front)) b'Retouched and rescaled (square) image for tagging'
                                     
'TALB' (Album/Movie/Show title)                     'The Early Piano Works'
'TBPM' (BPM (beats per minute))                     '118'
'TCOM' (Composer)                                   'Erik Satie'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDOR' (Original release time)                      '1989'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         "Pièces froides No. 1, Airs à faire fuir : III. S'inviter"
'TKEY' (Initial key)                                '9B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Erik Satie'
'TPE2' (Band/orchestra/accompaniment)               'Erik Satie; Reinbert de Leeuw'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Decca Classics'
'TRCK' (Track number/Position in set)               '9/17'
'TSO2'                                              'Satie, Erik; Leeuw, Reinbert de'
'TSOP' (Performer sort order)                       'Satie, Erik'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:Artists'                                      'Erik Satie'
'TXXX:BARCODE'                                      '028946216125'
'TXXX:CATALOGNUMBER'                                '462 161-2'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '0'
'TXXX:MusicBrainz Album Artist Id'                  'e1d521ea-5b97-4981-987c-ba988b2a87d7/fe455620-6713-4861-90f9-020593a2d7ba'
'TXXX:MusicBrainz Album Id'                         '47c7e4eb-6295-4da2-92e6-de8e7db1ea29'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'e1d521ea-5b97-4981-987c-ba988b2a87d7'
'TXXX:MusicBrainz Release Group Id'                 'c39444eb-9f73-3307-b503-01eba94e0de5'
'TXXX:MusicBrainz Release Track Id'                 'ee633e9e-f122-4a47-8452-241812503aa1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '1989'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+6.73 dB'
'TXXX:replaygain_track_peak'                        '0.914772'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6061fc78-291c-4666-a353-75b3736bc0f4')

========================== row from database ==========================
                                              'id'  1213803
                                            'path'  /data/Music/Bulk/00instruments-classical/Satie, Erik/10 - Nummer 10.wma.mp3
                                         'working'  None
                                         'bitrate'  227
                                    'duration_sec'  228
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  6552588
                                           'mtime'  1621853292
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Satie, 10 Nummer 10.wma prerock classical classical instruments
                                      'tag_artist'  Erik Satie; Reinbert de Leeuw
                                     'tag_release'  The Early Piano Works
                                       'tag_title'  Pièces froides No. 1, Airs à faire fuir : III. S'inviter
                                             'bpm'  118.0
                                    'search_title'  '1':6,7 'a':9,10 'airs':8 'faire':11 'froides':3 'fuir':12 'iii':13,14 'inviter':16 'no':4,5 'pieces':1,2 's':15 'sinviter':17
                                   'search_artist'  'de':5 'erik':1 'leeuw':6 'reinbert':4 'satie':2,3
                                  'search_release'  'early':2 'piano':3 'the':1 'works':4
                                     'search_rest'  '00instruments':1 '10':6 '10wma':8 'classical':2 'instruments':10 'nummer':5 'prerock':9 'satie':3,4 'wma':7
                                    'search_combo'  '00instruments':28 '1':6A,7A '10':33 '10wma':35 'a':9A,10A 'airs':8A 'classical':29 'de':22B 'early':25C 'erik':18B 'faire':11A 'froides':3A 'fuir':12A 'iii':13A,14A 'instruments':37 'inviter':16A 'leeuw':23B 'no':4A,5A 'nummer':32 'piano':26C 'pieces':1A,2A 'prerock':36 'reinbert':21B 's':15A 'satie':19B,20B,30,31 'sinviter':17A 'the':24C 'wma':34 'works':27C
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853292.4381633  (2021-05-24 12:48:12)
                             'size'  6552588