======================== unified (from filesystem) ========================
                                         'bitrate'  '170.566'
                                        'duration'  '209'
                                          'artist'  'John Holt'
                                     'text_people'  ''
                                         'release'  'Police in Helicopter'
                                           'title'  'Private Doctor'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-HHRNBTT-2', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['jamaica', 'reggae', 'rocksteady', 'roots reggae', 'roots', 'lovers rock']"
                                     'discogstags'  "['reggae']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '10'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-dub'
                                             'bpm'  '149'
                                             'key'  '1B'
                                        'acoustid'  '879f16c3-efe7-42f1-a83d-a71c2f58cb26'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'A\x00+\x00B\x007\x00+\x004\x000\x00E\x00C\x00+\x007\x00E\x005\x002\x00+\x00B\x00F\x004\x00F\x00+\x00F\x00B\x00F\x009\x00+\x001\x003\x00F\x003\x00D\x00+\x001\x008\x001\x00A\x008\x00+\x001\x00B\x00D\x006\x007\x00+\x001\x00F\x008\x006\x003\x00+\x002\x003\x001\x00E\x000\x00+\x002\x006\x00F\x008\x002\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Police in Helicopter'
'TBPM' (BPM (beats per minute))                     '149'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-dub'
'TDOR' (Original release time)                      '1983'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Private Doctor'
'TKEY' (Initial key)                                '1B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'John Holt'
'TPE2' (Band/orchestra/accompaniment)               'John Holt'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Greensleeves Records'
'TRCK' (Track number/Position in set)               '2/10'
'TSO2'                                              'Holt, John'
'TSOP' (Performer sort order)                       'Holt, John'
'TSRC' (ISRC (international standard recording code))  'GBBZV8302461'
'TXXX:ASIN'                                         'B00005BJCU'
'TXXX:Acoustid Id'                                  '879f16c3-efe7-42f1-a83d-a71c2f58cb26'
'TXXX:Artists'                                      'John Holt'
'TXXX:BARCODE'                                      '601811005828'
'TXXX:CATALOGNUMBER'                                'GREWD58'
'TXXX:MusicBrainz Album Artist Id'                  '38d64df7-5b7f-42ca-9d98-9541640ca84f'
'TXXX:MusicBrainz Album Id'                         '25d21899-c7d0-45fe-878b-ad38cb48558a'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '38d64df7-5b7f-42ca-9d98-9541640ca84f'
'TXXX:MusicBrainz Release Group Id'                 'e4197d38-d25f-38bf-be39-a146cf6fe6dd'
'TXXX:MusicBrainz Release Track Id'                 '76834988-f424-3e1e-a5a3-e74be4f212a2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'reggae'
'TXXX:lastfmtags'                                   ['jamaica', 'reggae', 'rocksteady', 'roots reggae', 'roots', 'lovers rock']
'TXXX:originalyear'                                 '1983'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+14.15 dB'
'TXXX:replaygain_track_peak'                        '0.092459'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'4b231d49-7431-44e1-922e-65023b0232a2')

========================== row from database ==========================
                                              'id'  1386527
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/John Holt - Police In Helicopter/02 - John Holt - Private Doctor.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  209
                                           'genre'  loc-style-reggae or dub or ska or dancehall-dub
                                        'filesize'  4549231
                                           'mtime'  1620521637
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub In 02 loc style reggae dub ska dancehall dub
                                      'tag_artist'  John Holt
                                     'tag_release'  Police in Helicopter
                                       'tag_title'  Private Doctor
                                             'bpm'  149.0
                                    'search_title'  'doctor':2 'private':1
                                   'search_artist'  'holt':2 'john':1
                                  'search_release'  'helicopter':3 'in':2 'police':1
                                     'search_rest'  '00reggae':1 'dancehall':8 'dub':2 'in':3 'loc':4 'reggae':6 'ska':7 'style':5
                                    'search_combo'  '00reggae':8 'dancehall':15 'doctor':2A 'dub':9 'helicopter':7C 'holt':4B 'in':6C,10 'john':3B 'loc':11 'police':5C 'private':1A 'reggae':13 'ska':14 'style':12
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jamaica', 'reggae', 'rocksteady', 'roots reggae', 'roots', 'lovers rock']
                                        'tag_date'  2001
                                     'discogstags'  ['reggae']

============================== file details ==============================
                                           'mtime'  1620521637.3883617  (2021-05-09 02:53:57)
                             'size'  4549231