======================== unified (from filesystem) ========================
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                                        'duration'  '402'
                                          'artist'  'Principles of Geometry'
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                                           'title'  'Letom Redrum'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '16'
                                            'date'  '2007'
                                        'comments'  ''
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                                             'bpm'  '141.909'
                                             'key'  '9A'
                                        'acoustid'  '938b1b07-636d-464d-8013-d665a73043ea'
rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDOR' (Original release time)                      '2007'
'TDRC' (Recording time)                             '2007-11-05'
'TENC' (Encoded by)                                 "LAME Ain't an MP3 Encoder"
'TIT2' (Title/songname/content description)         'Letom Redrum'
'TKEY' (Initial key)                                '9A'
'TLAN' (Language(s))                                'English'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Principles of Geometry'
'TPE2' (Band/orchestra/accompaniment)               'Principles of Geometry'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Tigersushi'
'TRCK' (Track number/Position in set)               '15/16'
'TSO2'                                              'Principles of Geometry'
'TSOP' (Performer sort order)                       'Principles of Geometry'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:q-drums'                                      '3'
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'TXXX:replaygain_track_peak'                        '0.375914'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00poprockelectronic/Principles of Geometry - 2007 - Lazare/15-principles_of_geometry-letom_redrum.mp3
                                         'working'  None
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                                    'duration_sec'  402
                                           'genre'  electronic
                                        'filesize'  10090267
                                           'mtime'  1636914307
                                   'redo_metaread'  0
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                                      'tag_artist'  Principles of Geometry
                                     'tag_release'  Lazare
                                       'tag_title'  Letom Redrum
                                             'bpm'  141.909
                                    'search_title'  'letom':1 'redrum':2
                                   'search_artist'  'geometry':3 'of':2 'principles':1
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                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['breakbeat', 'electronica', 'idm', 'electronic', 'ambient']
                                        'tag_date'  2007
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636914307.2619987  (2021-11-14 19:25:07)
                             'size'  10090267