======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '173'
                                          'artist'  'Billy Bragg'
                                     'text_people'  ''
                                         'release'  'One Voice: Vocal Music From Around the World'
                                           'title'  'Tender Comrade'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'political', 'british', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '19'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '143'
                                             'key'  '11A'
                                        'acoustid'  'cc9f4898-fb2a-4f86-be6f-85071d7bcb96'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'One Voice: Vocal Music From Around the World'
'TBPM' (BPM (beats per minute))                     '143'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997-09-09'
'TIT2' (Title/songname/content description)         'Tender Comrade'
'TKEY' (Initial key)                                '11A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Bragg'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'World Music Network'
'TRCK' (Track number/Position in set)               '3/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Bragg, Billy'
'TXXX:ASIN'                                         'B000001I1K'
'TXXX:Acoustid Id'                                  'cc9f4898-fb2a-4f86-be6f-85071d7bcb96'
'TXXX:Artists'                                      'Billy Bragg'
'TXXX:BARCODE'                                      '605633101423'
'TXXX:CATALOGNUMBER'                                'RGNET1014CD'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'aca58a7c-448d-46c6-a380-17fdd6285285'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '7cec4a03-0a83-4308-856a-afb8aa5db0fc'
'TXXX:MusicBrainz Release Group Id'                 'd48b8ca3-aef1-32e5-bb3b-6fcb4ad607a6'
'TXXX:MusicBrainz Release Track Id'                 '6b673e37-9ab1-309c-a8e6-8d1ffccb5f60'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['rock', 'political', 'british', 'folk', 'singer songwriter']
'TXXX:mood'                                         'Electronic/Relaxed/Sad/Not party/Not happy/Not acoustic/Not aggressive'
'TXXX:originalyear'                                 '1997'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.61 dB'
'TXXX:replaygain_track_peak'                        '0.667949'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b4bcabec-61bc-40be-9f04-623b9fb92aa1')

========================== row from database ==========================
                                              'id'  471804
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/One Voice： Vocal Music From Around the World (World Music Network, 1997) [256k]/Vocal Music From Around The World - 03. Tender Comrade.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  173
                                           'genre'  loc-unsorted
                                        'filesize'  5629074
                                           'mtime'  1637330008
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. 1： Trad Voice： (World Network, 1997) [256k] The 03. loc unsorted
                                      'tag_artist'  Billy Bragg
                                     'tag_release'  One Voice: Vocal Music From Around the World
                                       'tag_title'  Tender Comrade
                                             'bpm'  143.0
                                    'search_title'  'comrade':2 'tender':1
                                   'search_artist'  'billy':1 'bragg':2
                                  'search_release'  'around':7 'from':6 'music':5 'one':1 'the':8 'vocal':4 'voice':2,3 'world':9
                                     'search_rest'  '03':19,20 '1':3,4,5 '1997':14,15 '256k':16,17 'loc':21 'network':12,13 'the':18 'trad':6 'unsorted':22 'va':1,2 'voice':7,8,9 'world':10,11
                                    'search_combo'  '03':32,33 '1':16,17,18 '1997':27,28 '256k':29,30 'around':11C 'billy':3B 'bragg':4B 'comrade':2A 'from':10C 'loc':34 'music':9C 'network':25,26 'one':5C 'tender':1A 'the':12C,31 'trad':19 'unsorted':35 'va':14,15 'vocal':8C 'voice':6C,7C,20,21,22 'world':13C,23,24
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'political', 'british', 'folk', 'singer songwriter']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330007.6406953  (2021-11-19 14:53:27)
                             'size'  5629074