======================== unified (from filesystem) ========================
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                                        'duration'  '335'
                                          'artist'  'Johann Sebastian Bach'
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                                           'title'  'Christmas Oratorio: Sinfonia in G'
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                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '10'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments;set-th-christmas'
                                             'bpm'  '93'
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rest: ''

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

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'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1991-03-19'
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'TKEY' (Initial key)                                '2B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Johann Sebastian Bach'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
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'TPUB' (Publisher)                                  'LaserLight Digital'
'TRCK' (Track number/Position in set)               '3/10'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Bach, Johann Sebastian'
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'TXXX:Artists'                                      'Johann Sebastian Bach'
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'TXXX:MusicBrainz Album Type'                       'album/compilation'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
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'TXXX:Q-UNU'                                        '1'
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'TXXX:lastfmtags'                                   ['instrumental', 'composers', 'baroque', 'german', 'classical']
'TXXX:originalyear'                                 '1991'
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'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.23 dB'
'TXXX:replaygain_track_peak'                        '0.776865'
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========================== row from database ==========================
                                              'id'  1507549
                                            'path'  /data/Music/Bulk/00instruments-classical/The Top 100 Masterpieces of Classical Music 1685-1928/Disc 2 - 1731-1775/03 - 1734 Bach , Sinfonia in G (from _Christmas Oratorio_).mp3
                                         'working'  None
                                         'bitrate'  202
                                    'duration_sec'  335
                                           'genre'  prerock-classical or classical instruments;set-th-christmas
                                        'filesize'  8605244
                                           'mtime'  1637329806
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                                      'tag_artist'  Johann Sebastian Bach
                                     'tag_release'  100 Masterpieces, Volume 2: The Top 10 of Classical Music 1731-1775
                                       'tag_title'  Christmas Oratorio: Sinfonia in G
                                             'bpm'  93.0
                                    'search_title'  'christmas':1 'g':6 'in':5 'oratorio':2,3 'sinfonia':4
                                   'search_artist'  'bach':3 'johann':1 'sebastian':2
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                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'composers', 'baroque', 'german', 'classical']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329805.8542535  (2021-11-19 14:50:05)
                             'size'  8605244