======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '223'
                                          'artist'  'The Smashing Pumpkins'
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                                           'title'  'The Crying Tree of Mercury'
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                                      'lastfmtags'  "['alternative rock/90s/alternative/grunge/rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '15'
                                            'date'  '1999'
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                                           'genre'  'rock-gr-grunge'
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                                             'key'  '1A'
                                        'acoustid'  '5af77bbb-345a-4972-b8ff-a123654bfd67'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '128.3'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'The Crying Tree of Mercury'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Smashing Pumpkins'
'TPE2' (Band/orchestra/accompaniment)               'The Smashing Pumpkins'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Virgin'
'TRCK' (Track number/Position in set)               '12/15'
'TSO2'                                              'Smashing Pumpkins, The'
'TSOP' (Performer sort order)                       'Smashing Pumpkins, The'
'TXXX:Acoustid Id'                                  '5af77bbb-345a-4972-b8ff-a123654bfd67'
'TXXX:Artists'                                      'The Smashing Pumpkins'
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'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'promotion'
'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   'alternative rock/90s/alternative/grunge/rock'
'TXXX:originalyear'                                 '1999'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.44 dB'
'TXXX:replaygain_track_peak'                        '0.499997'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e4c9ac4f-ae42-49b1-9dad-0762d6111df2')

========================== row from database ==========================
                                              'id'  1351682
                                            'path'  /data/Music/Bulk/00poprockelectronic/Smashing Pumpkins/The Machines Of God/Smashing Pumpkins - The Crying Tree of Mercury.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  223
                                           'genre'  rock-gr-grunge
                                        'filesize'  3590265
                                           'mtime'  1636903084
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Machines Of rock gr grunge
                                      'tag_artist'  The Smashing Pumpkins
                                     'tag_release'  MACHINA/the machines of God [Pre-Master]
                                       'tag_title'  The Crying Tree of Mercury
                                             'bpm'  128.3
                                    'search_title'  'crying':2 'mercury':5 'of':4 'the':1 'tree':3
                                   'search_artist'  'pumpkins':3 'smashing':2 'the':1
                                  'search_release'  'god':6 'machina':1 'machinathe':3 'machines':4 'master':8 'of':5 'pre':7 'premaster':9 'the':2
                                     'search_rest'  '00poprockelectronic':1 'gr':5 'grunge':6 'machines':2 'of':3 'rock':4
                                    'search_combo'  '00poprockelectronic':18 'crying':2A 'god':14C 'gr':22 'grunge':23 'machina':9C 'machinathe':11C 'machines':12C,19 'master':16C 'mercury':5A 'of':4A,13C,20 'pre':15C 'premaster':17C 'pumpkins':8B 'rock':21 'smashing':7B 'the':1A,6B,10C 'tree':3A
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-JZFKS-1', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock/90s/alternative/grunge/rock']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636903083.8819928  (2021-11-14 16:18:03)
                             'size'  3590265