======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '112'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Music! The Berlin Phonogramm-Archiv 1900-2000'
                                           'title'  'Zande Song 1 (Sudan, 1928)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-LOCALNESS-3', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '27'
                                      'tracktotal'  '42'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '144.028'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Music! The Berlin Phonogramm-Archiv 1900-2000'
'TBPM' (BPM (beats per minute))                     '144.028'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000-06-11'
'TIT2' (Title/songname/content description)         'Zande Song 1 (Sudan, 1928)'
'TKEY' (Initial key)                                '12A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/4'
'TPUB' (Publisher)                                  'WERGO'
'TRCK' (Track number/Position in set)               '27/42'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       '[unknown]'
'TSST' (Set subtitle)                               'Wax Cylinder Recordings 1893-1954'
'TXXX:ASIN'                                         'B00004YUCI'
'TXXX:Artists'                                      '[unknown]'
'TXXX:BARCODE'                                      '4010228170122'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '4c4fa0e1-0593-43e8-98e7-c1a88976a4a3'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Artist Id'                        '125ec42a-7229-4250-afc5-e057484327fe'
'TXXX:MusicBrainz Release Group Id'                 '973c39f1-1c5e-35f6-9972-9f81ee206236'
'TXXX:MusicBrainz Release Track Id'                 '97a775e8-f68c-3a6f-a575-acc94ef6c5cf'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '2000'
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.79 dB'
'TXXX:replaygain_track_peak'                        '0.718371'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'256b7e9a-edc1-4236-90f2-6464c4e3f0b5')

========================== row from database ==========================
                                              'id'  475519
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Berlin Phonogramm Archiv - Wax Cylinder Recordings (1893-1954) [192k]/27-anon_(sudan_1928)-zande_song_1.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  112
                                           'genre'  loc-unsorted
                                        'filesize'  2760964
                                           'mtime'  1621629862
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Wax Cylinder Recordings (1893 1954) [192k] 27 anon_(sudan_1928) zande_song_1 loc unsorted
                                      'tag_artist'  [unknown]
                                     'tag_release'  Music! The Berlin Phonogramm-Archiv 1900-2000
                                       'tag_title'  Zande Song 1 (Sudan, 1928)
                                             'bpm'  144.028
                                    'search_title'  '1':3 '1928':6,7 'song':2 'sudan':4,5 'zande':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '1900':7 '19002000':9 '2000':8 'archiv':5 'berlin':3 'music':1 'phonogramm':4 'phonogrammarchiv':6 'the':2
                                     'search_rest'  '1':4,5,6,26 '1893':11,12 '1928':20,23 '192k':15,16 '1954':13,14 '27':17 'anon':18,21 'cylinder':9 'loc':27 'recordings':10 'song':25 'sudan':19,22 'trad':7 'unsorted':28 'va':1,2 'wax':8 'world':3 'zande':24
                                    'search_combo'  '1':3A,22,23,24,44 '1893':29,30 '1900':16C '19002000':18C '1928':6A,7A,38,41 '192k':33,34 '1954':31,32 '2000':17C '27':35 'anon':36,39 'archiv':14C 'berlin':12C 'cylinder':27 'loc':45 'music':10C 'phonogramm':13C 'phonogrammarchiv':15C 'recordings':28 'song':2A,43 'sudan':4A,5A,37,40 'the':11C 'trad':25 'unknown':8B,9B 'unsorted':46 'va':19,20 'wax':26 'world':21 'zande':1A,42
                                    'tag_tracknum'  27
                                      'num_images'  1
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629862.4375775  (2021-05-21 22:44:22)
                             'size'  2760964