======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '164'
                                          'artist'  'Tim Hardin'
                                     'text_people'  ''
                                         'release'  'Simple Songs Of Freedom - The Tim Hardin Collection'
                                           'title'  'Palying Cards/The Magician'
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                                      'lastfmtags'  "['acoustic', 'blues', '60s', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '17'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '141.6'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000006FC 00000000006EABF4 00000000 00000000 00000000 '
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'COMM:iTunes_CDDB_IDs:eng'                          '17+8772C88CC08E4D374A26D3D4F7DE1462+1325650'
'TALB' (Album/Movie/Show title)                     'Simple Songs Of Freedom - The Tim Hardin Collection'
'TBPM' (BPM (beats per minute))                     '141.6'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1968'
'TENC' (Encoded by)                                 'iTunes v6.0.4.2'
'TIT2' (Title/songname/content description)         'Palying Cards/The Magician'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tim Hardin'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/17'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['acoustic', 'blues', '60s', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.02 dB'
'TXXX:replaygain_track_peak'                        '0.725368'

========================== row from database ==========================
                                              'id'  1271263
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Tim Hardin/Simple Songs Of Freedom/Tim Hardin - 04 Palying Cards_The Magician.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  164
                                           'genre'  ifs-songwriter
                                        'filesize'  3950700
                                           'mtime'  1636401446
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 04 Cards_The ifs songwriter
                                      'tag_artist'  Tim Hardin
                                     'tag_release'  Simple Songs Of Freedom - The Tim Hardin Collection
                                       'tag_title'  Palying Cards/The Magician
                                             'bpm'  141.6
                                    'search_title'  'cards':2 'cardsthe':4 'magician':5 'palying':1 'the':3
                                   'search_artist'  'hardin':2 'tim':1
                                  'search_release'  'collection':8 'freedom':4 'hardin':7 'of':3 'simple':1 'songs':2 'the':5 'tim':6
                                     'search_rest'  '00singer':1 'cards':4 'eos':3 'ifs':6 'songwriter':2 'the':5
                                    'search_combo'  '00singer':16 'cards':2A,19 'cardsthe':4A 'collection':15C 'eos':18 'freedom':11C 'hardin':7B,14C 'ifs':21 'magician':5A 'of':10C 'palying':1A 'simple':8C 'songs':9C 'songwriter':17 'the':3A,12C,20 'tim':6B,13C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'blues', '60s', 'folk', 'singer songwriter']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636401445.5662148  (2021-11-08 20:57:25)
                             'size'  3950700