======================== unified (from filesystem) ========================
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                                        'duration'  '142'
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                                     'tracknumber'  '3'
                                      'tracktotal'  '21'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic;set-pl-mor'
                                             'bpm'  '100.5'
                                             'key'  '8B'
                                        'acoustid'  'cc4fca57-b8ff-41a8-b89a-bf4683ab88b8'
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======================== rawer (from filesystem) ========================

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'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-psychedelic', 'set-pl-mor']
'TDOR' (Original release time)                      '1968'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Burial Waltz'
'TKEY' (Initial key)                                '8B'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'The Fugs'
'TPE2' (Band/orchestra/accompaniment)               'The Fugs'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Reprise Records'
'TRCK' (Track number/Position in set)               '3/21'
'TSO2'                                              'Fugs, The'
'TSOP' (Performer sort order)                       'Fugs, The'
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'TXXX:Artists'                                      'The Fugs'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['proto punk', 'psychedelic rock', '60s', 'psychedelic', 'rock']
'TXXX:originalyear'                                 '1968'
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'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
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'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.56 dB'
'TXXX:replaygain_track_peak'                        '0.702919'
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========================== row from database ==========================
                                              'id'  1416299
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Fugs - It Crawled Into My Hand, Honest/03 - burial waltz.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  142
                                           'genre'  rock-cppex-psychedelic;set-pl-mor
                                        'filesize'  5802008
                                           'mtime'  1620737150
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 03 burial waltz rock cppex psychedelic;set pl mor
                                      'tag_artist'  The Fugs
                                     'tag_release'  It Crawled Into My Hand, Honest
                                       'tag_title'  Burial Waltz
                                             'bpm'  100.5
                                    'search_title'  'burial':1 'waltz':2
                                   'search_artist'  'fugs':2 'the':1
                                  'search_release'  'crawled':2 'hand':5,6 'honest':7 'into':3 'it':1 'my':4
                                     'search_rest'  'burial':2 'classicprogpsy':1 'cppex':5 'mor':11 'pl':10 'psychedelic':6,8 'rock':4 'set':7,9 'waltz':3
                                    'search_combo'  'burial':1A,13 'classicprogpsy':12 'cppex':16 'crawled':6C 'fugs':4B 'hand':9C,10C 'honest':11C 'into':7C 'it':5C 'mor':22 'my':8C 'pl':21 'psychedelic':17,19 'rock':15 'set':18,20 'the':3B 'waltz':2A,14
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['proto punk', 'psychedelic rock', '60s', 'psychedelic', 'rock']
                                        'tag_date'  1968
                                     'discogstags'  ['rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1620737150.174533  (2021-05-11 14:45:50)
                             'size'  5802008