======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Leonard Cohen'
                                     'text_people'  ''
                                         'release'  'Songs From a Room'
                                           'title'  'A Bunch of Lonesome Heroes'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'canadian', 'rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '12'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '100'
                                             'key'  '11B'
                                        'acoustid'  '3e040229-0fc1-49ee-aabb-b5daa057aa2b'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Songs From a Room'
'TBPM' (BPM (beats per minute))                     '100'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '1969'
'TDRC' (Recording time)                             '2007-04-24'
'TIT2' (Title/songname/content description)         'A Bunch of Lonesome Heroes'
'TKEY' (Initial key)                                '11B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Leonard Cohen'
'TPE2' (Band/orchestra/accompaniment)               'Leonard Cohen'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Columbia/Legacy'
'TRCK' (Track number/Position in set)               '3/12'
'TSO2'                                              'Cohen, Leonard'
'TSOP' (Performer sort order)                       'Cohen, Leonard'
'TSRC' (ISRC (international standard recording code))  'USSM19917383'
'TXXX:ASIN'                                         'B000NOKA1C'
'TXXX:Acoustid Id'                                  '3e040229-0fc1-49ee-aabb-b5daa057aa2b'
'TXXX:Artists'                                      'Leonard Cohen'
'TXXX:BARCODE'                                      '886970474023'
'TXXX:CATALOGNUMBER'                                '88697 04740 2'
'TXXX:MusicBrainz Album Artist Id'                  '65314b12-0e08-43fa-ba33-baaa7b874c15'
'TXXX:MusicBrainz Album Id'                         'c8bb1370-eb39-447b-8b32-6b5fdd023700'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '65314b12-0e08-43fa-ba33-baaa7b874c15'
'TXXX:MusicBrainz Release Group Id'                 '0c0d5696-5d29-3809-8b79-4bf1320f0353'
'TXXX:MusicBrainz Release Track Id'                 '87195399-a01c-3602-afdf-de3c1f98486a'
'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'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['blues', 'canadian', 'rock', 'folk', 'singer songwriter']
'TXXX:originalyear'                                 '1969'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.33 dB'
'TXXX:replaygain_track_peak'                        '0.732874'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6df65969-fe42-46fa-b167-7f3abd47ee90')

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Leonard Cohen/Songs From A Room/MBZ;#Leonard Cohen;#Songs From A Room;#03;#A Bunch Of Lonesome Heros.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  ifs-songwriter
                                        'filesize'  3899374
                                           'mtime'  1622658720
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos MBZ;#Leonard Cohen;#Songs Room;#03;#A Of Heros ifs songwriter
                                      'tag_artist'  Leonard Cohen
                                     'tag_release'  Songs From a Room
                                       'tag_title'  A Bunch of Lonesome Heroes
                                             'bpm'  100.0
                                    'search_title'  'a':1 'bunch':2 'heroes':5 'lonesome':4 'of':3
                                   'search_artist'  'cohen':2 'leonard':1
                                  'search_release'  'a':3 'from':2 'room':4 'songs':1
                                     'search_rest'  '00singer':1 '03':13,16 'a':14,17 'cohen':8,10 'eos':3 'heros':19 'ifs':20 'leonard':5,7 'mbz':4,6 'of':18 'room':12,15 'songs':9,11 'songwriter':2
                                    'search_combo'  '00singer':12 '03':24,27 'a':1A,10C,25,28 'bunch':2A 'cohen':7B,19,21 'eos':14 'from':9C 'heroes':5A 'heros':30 'ifs':31 'leonard':6B,16,18 'lonesome':4A 'mbz':15,17 'of':3A,29 'room':11C,23,26 'songs':8C,20,22 'songwriter':13
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'canadian', 'rock', 'folk', 'singer songwriter']
                                        'tag_date'  2007
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1622658720.4588425  (2021-06-02 20:32:00)
                             'size'  3899374