======================== unified (from filesystem) ========================
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                                        'duration'  '94'
                                          'artist'  'The Books'
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                                         'release'  'The Lemon of Pink'
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                                      'lastfmtags'  "['indie', 'electronica', 'electronic', 'experimental', 'indietronica']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-experimental'
                                             'bpm'  '123.0'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000032E 00000598 0000103C 00002000 00009249 00009249 000063E6 0000669E '
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'TALB' (Album/Movie/Show title)                     'The Lemon of Pink'
'TBPM' (BPM (beats per minute))                     '123.0'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-experimental'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'The Lemon of Pink, Pt 2'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Books'
'TPE2' (Band/orchestra/accompaniment)               'The Books'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['indie', 'electronica', 'electronic', 'experimental', 'indietronica']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.05 dB'
'TXXX:replaygain_track_peak'                        '0.607360'
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========================== row from database ==========================
                                              'id'  388889
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Books/[2003] The Lemon of Pink/02 The Lemon of Pink, Pt 2.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  94
                                           'genre'  ifs-songwriter-experimental
                                        'filesize'  2687265
                                           'mtime'  1637330458
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm [2003] 02 ifs songwriter experimental
                                      'tag_artist'  The Books
                                     'tag_release'  The Lemon of Pink
                                       'tag_title'  The Lemon of Pink, Pt 2
                                             'bpm'  123.0
                                    'search_title'  '2':7 'lemon':2 'of':3 'pink':4,5 'pt':6 'the':1
                                   'search_artist'  'books':2 'the':1
                                  'search_release'  'lemon':2 'of':3 'pink':4 'the':1
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                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'electronica', 'electronic', 'experimental', 'indietronica']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1637330458.3312137  (2021-11-19 15:00:58)
                             'size'  2687265