======================== unified (from filesystem) ========================
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                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '3'
                                            'date'  '2002'
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======================== rawer (from filesystem) ========================

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'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002'
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'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Hildegard Westerkamp'
'TPE2' (Band/orchestra/accompaniment)               'Hildegard Westerkamp'
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'TPUB' (Publisher)                                  'Earsay'
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'TXXX:discogstags'                                  'field recording'
'TXXX:lastfmtags'                                   ['field recording', 'nature', 'musique concrète', 'experimental', 'ambient']
'TXXX:originalyear'                                 '2002'
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'TXXX:q-busy'                                       '3'
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'TXXX:q-drums'                                      '1'
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========================== row from database ==========================
                                              'id'  1398533
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Into India/1.Gently Penetrating....mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  843
                                           'genre'  loc-asia-india
                                        'filesize'  20287227
                                           'mtime'  1621629143
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                                      'tag_artist'  Hildegard Westerkamp
                                     'tag_release'  Into India
                                       'tag_title'  Gently Penetrating: Beneath The Sounding Surfaces Of Another Place
                                             'bpm'  135.819
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                                   'search_artist'  'hildegard':1 'westerkamp':2
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                                     'search_rest'  '00asia':1 '1':2 '1gently':4 'asia':8 'gently':3 'india':9 'loc':7 'penetrating':5,6
                                    'search_combo'  '00asia':15 '1':16 '1gently':18 'another':9A 'asia':22 'beneath':4A 'gently':1A,17 'hildegard':11B 'india':14C,23 'into':13C 'loc':21 'of':8A 'penetrating':2A,3A,19,20 'place':10A 'sounding':6A 'surfaces':7A 'the':5A 'westerkamp':12B
                                    'tag_tracknum'  1
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                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['field recording', 'nature', 'musique concrète', 'experimental', 'ambient']
                                        'tag_date'  2002
                                     'discogstags'  ['field recording']

============================== file details ==============================
                                           'mtime'  1621629143.3412564  (2021-05-21 22:32:23)
                             'size'  20287227