======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '77'
                                          'artist'  'Essep, Island of Uman'
                                     'text_people'  ''
                                         'release'  'Music! The Berlin Phonogramm-Archiv 1900-2000'
                                           'title'  'Breadfruit Dance Song (Truk Atoll, Micronesia, 1907)'
                                           '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-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  '42'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '131.584'
                                             'key'  '6A'
                                        '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))                     '131.584'
'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)         'Breadfruit Dance Song (Truk Atoll, Micronesia, 1907)'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Essep, Island of Uman'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/4'
'TPUB' (Publisher)                                  'WERGO'
'TRCK' (Track number/Position in set)               '17/42'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Essep, Island of Uman'
'TSST' (Set subtitle)                               'Wax Cylinder Recordings 1893-1954'
'TXXX:ASIN'                                         'B00004YUCI'
'TXXX:Artists'                                      'Essep, Island of Uman'
'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'                        '220bb078-88e3-4144-839c-281dffdb5f48'
'TXXX:MusicBrainz Release Group Id'                 '973c39f1-1c5e-35f6-9972-9f81ee206236'
'TXXX:MusicBrainz Release Track Id'                 '1b84d81a-11e4-3af3-a66e-a4ef29a69f7d'
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.541369'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'239b8118-0f98-49b9-b34f-2031affd317d')

========================== row from database ==========================
                                              'id'  474101
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Berlin Phonogramm Archiv - Wax Cylinder Recordings (1893-1954) [192k]/17-anon_(truk_atoll-micronesia_1907)-emar_huang_breadfruit_dance_song.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  77
                                           'genre'  loc-unsorted
                                        'filesize'  1940939
                                           'mtime'  1621629862
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Wax Cylinder Recordings (1893 1954) [192k] 17 anon_(truk_atoll micronesia_1907) emar_huang_breadfruit_dance_song loc unsorted
                                      'tag_artist'  Essep, Island of Uman
                                     'tag_release'  Music! The Berlin Phonogramm-Archiv 1900-2000
                                       'tag_title'  Breadfruit Dance Song (Truk Atoll, Micronesia, 1907)
                                             'bpm'  131.584
                                    'search_title'  '1907':10,11 'atoll':6,7 'breadfruit':1 'dance':2 'micronesia':8,9 'song':3 'truk':4,5
                                   'search_artist'  'essep':1,2 'island':3 'of':4 'uman':5
                                  '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 '1893':11,12 '1907':24,26 '192k':15,16 '1954':13,14 'anon':17,20 'atoll':19,22 'breadfruit':29 'cylinder':9 'dance':30 'emar':27 'huang':28 'loc':32 'micronesia':23,25 'recordings':10 'song':31 'trad':7 'truk':18,21 'unsorted':33 'va':1,2 'wax':8 'world':3
                                    'search_combo'  '1':29,30,31 '1893':36,37 '1900':23C '19002000':25C '1907':10A,11A,49,51 '192k':40,41 '1954':38,39 '2000':24C 'anon':42,45 'archiv':21C 'atoll':6A,7A,44,47 'berlin':19C 'breadfruit':1A,54 'cylinder':34 'dance':2A,55 'emar':52 'essep':12B,13B 'huang':53 'island':14B 'loc':57 'micronesia':8A,9A,48,50 'music':17C 'of':15B 'phonogramm':20C 'phonogrammarchiv':22C 'recordings':35 'song':3A,56 'the':18C 'trad':32 'truk':4A,5A,43,46 'uman':16B 'unsorted':58 'va':26,27 'wax':33 'world':28
                                    'tag_tracknum'  17
                                      'num_images'  1
                                             'key'  6A
                                           '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-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629862.3595483  (2021-05-21 22:44:22)
                             'size'  1940939