======================== unified (from filesystem) ========================
                                         'bitrate'  '181.134'
                                        'duration'  '231'
                                          'artist'  'Radiohead'
                                     'text_people'  ''
                                         'release'  'Airbag / How Am I Driving?'
                                           'title'  'A Reminder'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'indie', 'alternative', 'electronic', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '7'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '135.004'
                                             'key'  '12B'
                                        'acoustid'  'f6ddd499-09ac-4f4f-b41c-d64304191750'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Airbag / How Am I Driving?'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1998-04-21'
'TIT2' (Title/songname/content description)         'A Reminder'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Radiohead'
'TPE2' (Band/orchestra/accompaniment)               'Radiohead'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/7'
'TSO2'                                              'Radiohead'
'TSOP' (Performer sort order)                       'Radiohead'
'TSRC' (ISRC (international standard recording code))  'GBAYE9701277'
'TXXX:ASIN'                                         'B000006352'
'TXXX:Acoustid Id'                                  'f6ddd499-09ac-4f4f-b41c-d64304191750'
'TXXX:BARCODE'                                      '724385870125'
'TXXX:CATALOGNUMBER'                                'C2 7243 8 58701 2 5'
'TXXX:LABEL'                                        'EMI Records USA'
'TXXX:MEDIA'                                        'CD'
'TXXX:MusicBrainz Album Artist Id'                  'a74b1b7f-71a5-4011-9441-d0b5e4122711'
'TXXX:MusicBrainz Album Id'                         '9b69cc24-f015-4e5f-bef1-3518c46611ca'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'ep'
'TXXX:MusicBrainz Artist Id'                        'a74b1b7f-71a5-4011-9441-d0b5e4122711'
'TXXX:MusicBrainz Track Id'                         '72f541ac-0d82-44e1-9f12-e50a7d23cfcf'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'alternative rock', 'indie rock']
'TXXX:lastfmtags'                                   ['alternative rock', 'indie', 'alternative', 'electronic', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.87 dB'
'TXXX:replaygain_track_peak'                        '0.615916'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1317521
                                            'path'  /data/Music/Bulk/00poprockelectronic/Radiohead/Airbag How Am I Driving/A Reminder.mp3
                                         'working'  None
                                         'bitrate'  181
                                    'duration_sec'  231
                                           'genre'  rock-pop
                                        'filesize'  5399437
                                           'mtime'  1636917820
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic rock pop
                                      'tag_artist'  Radiohead
                                     'tag_release'  Airbag / How Am I Driving?
                                       'tag_title'  A Reminder
                                             'bpm'  135.004
                                    'search_title'  'a':1 'reminder':2
                                   'search_artist'  'radiohead':1
                                  'search_release'  'airbag':1 'am':3 'driving':5 'how':2 'i':4
                                     'search_rest'  '00poprockelectronic':1 'pop':3 'rock':2
                                    'search_combo'  '00poprockelectronic':9 'a':1A 'airbag':4C 'am':6C 'driving':8C 'how':5C 'i':7C 'pop':11 'radiohead':3B 'reminder':2A 'rock':10
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'indie', 'alternative', 'electronic', 'rock']
                                        'tag_date'  1998
                                     'discogstags'  ['rock', 'alternative rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1636917820.13406  (2021-11-14 20:23:40)
                             'size'  5399437