======================== unified (from filesystem) ========================
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                                        'duration'  '147'
                                          'artist'  'The Mountain Goats'
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                             'musicbrainz_albumid'  ''
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '16'
                                            'date'  '2000'
                                        'comments'  ''
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rest: ''

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

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'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000-10-17'
'TIT2' (Title/songname/content description)         'Island Garden Song'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mountain Goats'
'TPE2' (Band/orchestra/accompaniment)               'The Mountain Goats'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Absolutely Kosher Records'
'TRCK' (Track number/Position in set)               '4/16'
'TSO2'                                              'Mountain Goats, The'
'TSOP' (Performer sort order)                       'Mountain Goats, The'
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'TXXX:Album rating'                                 '4'
'TXXX:BARCODE'                                      '653225001224'
'TXXX:CATALOGNUMBER'                                'AK012'
'TXXX:Mood'                                         ('Reflective, Literate, Ironic, Intimate, Earnest, Cathartic, Brooding, '
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'TXXX:MusicBrainz Album Id'                         'e022d75b-efad-4e5d-a192-970888da9532'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9639cd52-c351-4a17-9797-58880e95a7ef'
'TXXX:MusicBrainz Release Group Id'                 'e5c26b04-75a8-3acc-9a3d-76456a24b802'
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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:Style'                                        'Lo-Fi, Indie Rock, Alternative Pop/Rock'
'TXXX:discogstags'                                  ['rock', 'folk rock']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.92 dB'
'TXXX:replaygain_track_peak'                        '0.418798'
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========================== row from database ==========================
                                              'id'  1531587
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Mountain Goats/The Mountain Goats - The Coroner_s Gambit V0/The Mountain Goats - The Coroner_s Gambit - 04 - Island Garden Song.mp3
                                         'working'  None
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                                    'duration_sec'  147
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  3116935
                                           'mtime'  1636400434
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Coroner_s V0 Coroner_s 04 ifs songwriter indie
                                      'tag_artist'  The Mountain Goats
                                     'tag_release'  The Coroner's Gambit
                                       'tag_title'  Island Garden Song
                                             'bpm'  90.01
                                    'search_title'  'garden':2 'island':1 'song':3
                                   'search_artist'  'goats':3 'mountain':2 'the':1
                                  'search_release'  'coroner':2 'coroners':4 'gambit':5 's':3 'the':1
                                     'search_rest'  '00singer':1 'coroner':4 'eos':3 'ifs':7 'indie':8 's':5 'songwriter':2 'v0':6
                                    'search_combo'  '00singer':12 'coroner':8C,15 'coroners':10C 'eos':14 'gambit':11C 'garden':2A 'goats':6B 'ifs':18 'indie':19 'island':1A 'mountain':5B 's':9C,16 'song':3A 'songwriter':13 'the':4B,7C 'v0':17
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1636400433.681651  (2021-11-08 20:40:33)
                             'size'  3116935