======================== unified (from filesystem) ========================
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                                        'duration'  '308'
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                                      'lastfmtags'  "['industrial', 'dance', 'techno', 'electronic', 'electronica']"
                                     'discogstags'  "['electronic', 'breakbeat', 'big beat']"
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  ('electronic-generic or radio-bigbeat;eid-ebm or industrial or '
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                                             'bpm'  '116.6'
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rest: ''

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

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'TBPM' (BPM (beats per minute))                     '116.6'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-bigbeat',
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'TDOR' (Original release time)                      '2004'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Spitfire (feat. Juliette Lewis)'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Prodigy'
'TPE2' (Band/orchestra/accompaniment)               'The Prodigy'
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'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '4a4ee089-93b1-4470-af9a-6ff575d32704'
'TXXX:MusicBrainz TRM Id'                           '2b6d33fe-afd0-489e-ba55-fece41d9e3ef'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
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'TXXX:discogstags'                                  ['electronic', 'breakbeat', 'big beat']
'TXXX:lastfmtags'                                   ['industrial', 'dance', 'techno', 'electronic', 'electronica']
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'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00poprockelectronic/The Prodigy/[2004] Always Outnumbered, Never Outgunned/01 Spitfire (feat. Juliette Lewis).mp3
                                         'working'  None
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                                    'duration_sec'  308
                                           'genre'  electronic-generic or radio-bigbeat;eid-ebm or industrial or darkwave;set-pl-sced
                                        'filesize'  11269126
                                           'mtime'  1620296973
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                                      'tag_artist'  The Prodigy
                                     'tag_release'  Always Outnumbered, Never Outgunned
                                       'tag_title'  Spitfire (feat. Juliette Lewis)
                                             'bpm'  116.6
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                                    'search_combo'  '00poprockelectronic':14 '2004':15,16 'always':9C 'bigbeat':21,23 'darkwave':27,29 'ebm':25 'eid':22,24 'electronic':17 'feat':2A,3A 'generic':18 'industrial':26 'juliette':4A 'lewis':5A,6A 'never':12C 'or':19 'outgunned':13C 'outnumbered':10C,11C 'pl':31 'prodigy':8B 'radio':20 'sced':32 'set':28,30 'spitfire':1A 'the':7B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'dance', 'techno', 'electronic', 'electronica']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic', 'breakbeat', 'big beat']

============================== file details ==============================
                                           'mtime'  1620296972.8785021  (2021-05-06 12:29:32)
                             'size'  11269126