======================== unified (from filesystem) ========================
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                                        'duration'  '490'
                                          'artist'  'David Bowie'
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                                           'title'  'Width of a Circle'
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                             'musicbrainz_albumid'  ''
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                                            'date'  '1990'
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                                           'genre'  'ifs-songwriter-eos;set-pl-sced'
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'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000003C0 00000379 00001569 000016A1 000138C5 00057E57 00005EF0 00006246 '
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'TALB' (Album/Movie/Show title)                     'The Man Who Sold the World'
'TBPM' (BPM (beats per minute))                     '135'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-eos', 'set-pl-sced']
'TDOR' (Original release time)                      '1970'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Width of a Circle'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Rykodisc'
'TRCK' (Track number/Position in set)               '1/13'
'TSO2'                                              'Bowie, David'
'TSOP' (Performer sort order)                       'Bowie, David'
'TSRC' (ISRC (international standard recording code))  'USJT11500092/USJT19900014'
'TXXX:ASIN'                                         'B0000009NG'
'TXXX:Acoustid Id'                                  'a0323025-a54e-42df-841e-1151a4c2130b'
'TXXX:Artists'                                      'David Bowie'
'TXXX:CATALOGNUMBER'                                'RCD 10132'
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'TXXX:MusicBrainz Album Id'                         '246a9545-4a25-3204-a817-e52f9e5ae730'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Release Group Id'                 '2536a41d-fde9-35d5-a6c6-cd4d94ffd916'
'TXXX:MusicBrainz Release Track Id'                 'd0f79cbb-1008-3af2-bedb-bd47ed4457b4'
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'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'                                  ['glam', 'blues rock', 'alternative rock', 'rock']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:originalyear'                                 '1970'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.777067'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ff378417-ecfd-4b05-a864-a83149508a70')
'USLT::XXX'                                         ('In the corner of the morning in the past\r\n'
 'I would sit and blame the master first and last\r\n'
 'All the roads were straight and narrow\r\n'
 'And the prayers were small and yellow\r\n'
 'And the rumour spread that I was aging fast\r\n'
 'Then I ran across a monster who was sleeping\r\n'
 'By a tree.\r\n'
 'And I looked and frowned and the monster was me.\r\n'
 '\r\n'
 'Well, I said hello and I said hello\r\n'
 'And I asked "Why not?" and I replied "I don\'t know."\r\n'
 'So we asked a simple black bird, who was happy as can be\r\n'
 'And he laughed insane and quipped "KAHLIL GIBRAN"\r\n'
 'So I cried for all the others till the day was nearly through\r\n'
 "For I realized that God's a young man too\r\n"
 '\r\n'
 'So I said "So long" and I waved "Bye-bye"\r\n'
 'And I smashed my soul and traded my mind\r\n'
 'Got laid by a young bordello.\r\n'
 'I was vaguely half asleep,\r\n'
 'For which my reputation swept back home in drag\r\n'
 'And the moral of this magic spell\r\n'
 'Negotiates my hide\r\n'
 'When God did take my logic for a ride\r\n'
 '(Riding along)\r\n'
 '\r\n'
 'He swallowed his pride and puckered his lips\r\n'
 'And showed me the leather belt round his hips\r\n'
 'My knees were shaking my cheeks aflame\r\n'
 'He said "You\'ll never go down to the Gods again"\r\n'
 '(Turn around,go back!)\r\n'
 '\r\n'
 'He struck the ground a cavern appeared\r\n'
 'And I smelt the burning pit of fear\r\n'
 'We crashed a thousand yards below\r\n'
 'I said "Do it again, do it again"\r\n'
 '(Turn around,go back!)\r\n'
 '\r\n'
 'His nebulous body swayed above\r\n'
 "His tongue swollen with devil's love\r\n"
 'The snake and I, a venom high\r\n'
 'I said "Do it again, do it again"\r\n'
 '(Turn around, go back!)\r\n'
 '\r\n'
 'Breathe, breathe, breathe deeply\r\n'
 'And I was seething, breathing deeply\r\n'
 'Spitting sentry, horned and tailed\r\n'
 'Waiting for you\r\n'
 '\r\n'
 'Oh, oh, oh, oh, oh, oh, oh\r\n'
 'Oh, oh, oh, oh, oh, oh, oh')

========================== row from database ==========================
                                              'id'  382566
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/[1971] The Man Who Sold The World/01 The Width Of A Circle.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  490
                                           'genre'  ifs-songwriter-eos;set-pl-sced
                                        'filesize'  7941629
                                           'mtime'  1636400843
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [1971] 01 Of A ifs songwriter eos;set pl sced
                                      'tag_artist'  David Bowie
                                     'tag_release'  The Man Who Sold the World
                                       'tag_title'  Width of a Circle
                                             'bpm'  135.0
                                    'search_title'  'a':3 'circle':4 'of':2 'width':1
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'man':2 'sold':4 'the':1 'who':3 'world':5
                                     'search_rest'  '00singer':1 '1971':4,5 'a':7 'eos':3,9,11 'ifs':8 'of':6 'pl':13 'sced':14 'set':10,12 'songwriter':2
                                    'search_combo'  '00singer':12 '1971':15,16 'a':3A,18 'bowie':6B 'circle':4A 'david':5B 'eos':14,20,22 'ifs':19 'man':8C 'of':2A,17 'pl':24 'sced':25 'set':21,23 'sold':10C 'songwriter':13 'the':7C 'who':9C 'width':1A 'world':11C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1990
                                     'discogstags'  ['glam', 'blues rock', 'alternative rock', 'rock']

============================== file details ==============================
                                           'mtime'  1636400842.986402  (2021-11-08 20:47:22)
                             'size'  7941629