======================== unified (from filesystem) ========================
                                         'bitrate'  '235.854'
                                        'duration'  '278'
                                          'artist'  'Muslimgauze'
                                     'text_people'  ''
                                         'release'  'Baghdad'
                                           'title'  'Algeciras'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['idm', 'industrial', 'electronic', 'experimental', 'ambient']"
                                     'discogstags'  "['electronic', 'ambient', 'dub']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '10'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '114.738'
                                             'key'  '1A'
                                        'acoustid'  '8fd1d69f-1c4a-498a-bf9a-cc314a283c6d'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Baghdad'
'TBPM' (BPM (beats per minute))                     '114.738'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TDRC' (Recording time)                             '2000-03-11'
'TIT2' (Title/songname/content description)         'Algeciras'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Muslimgauze'
'TPE2' (Band/orchestra/accompaniment)               'Muslimgauze'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/10'
'TSO2'                                              'Muslimgauze'
'TSOP' (Performer sort order)                       'Muslimgauze'
'TXXX:Acoustid Id'                                  '8fd1d69f-1c4a-498a-bf9a-cc314a283c6d'
'TXXX:CATALOGNUMBER'                                'MUSLIMLIM 014'
'TXXX:LABEL'                                        'Staalplaat'
'TXXX:MEDIA'                                        'CD'
'TXXX:MusicBrainz Album Artist Id'                  '06fc1189-d7cd-4344-b09a-51cd82cfefe5'
'TXXX:MusicBrainz Album Id'                         '2d04622e-5554-4e55-994b-25d8599a1482'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '06fc1189-d7cd-4344-b09a-51cd82cfefe5'
'TXXX:MusicBrainz Track Id'                         'adc0f5bd-ec64-48b8-a5e9-d74acfade322'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'ambient', 'dub']
'TXXX:lastfmtags'                                   ['idm', 'industrial', 'electronic', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.54 dB'
'TXXX:replaygain_track_peak'                        '0.428148'

========================== row from database ==========================
                                              'id'  1110461
                                            'path'  /data/Music/Bulk/00localcharacter/Muslimgauze/Baghdad/04 Algeciras.mp3
                                         'working'  None
                                         'bitrate'  235
                                    'duration_sec'  278
                                           'genre'  loc-m
                                        'filesize'  8324594
                                           'mtime'  1620527032
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 04 loc
                                      'tag_artist'  Muslimgauze
                                     'tag_release'  Baghdad
                                       'tag_title'  Algeciras
                                             'bpm'  114.738
                                    'search_title'  'algeciras':1
                                   'search_artist'  'muslimgauze':1
                                  'search_release'  'baghdad':1
                                     'search_rest'  'loc':1
                                    'search_combo'  'algeciras':1A 'baghdad':3C 'loc':4 'muslimgauze':2B
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['idm', 'industrial', 'electronic', 'experimental', 'ambient']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic', 'ambient', 'dub']

============================== file details ==============================
                                           'mtime'  1620527031.8550115  (2021-05-09 04:23:51)
                             'size'  8324594