======================== unified (from filesystem) ========================
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                                        'duration'  '122'
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                                         'release'  'Greaser Instrumentals Vol. 08'
                                           'title'  'Tantalizing'
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                             'musicbrainz_albumid'  ''
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                            'musicbrainz_artistid'  ''
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                                     'tracknumber'  '16'
                                      'tracktotal'  '27'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf'
                                             'bpm'  '124.5'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunes_CDDB_IDs:eng'                          '27++'
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'TBPM' (BPM (beats per minute))                     '124.5'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-surf'
'TDRC' (Recording time)                             '1965'
'TENC' (Encoded by)                                 'iTunes 11.1.5.5'
'TIT2' (Title/songname/content description)         'Tantalizing'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Melody Heirs'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '16/27'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
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'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
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'TXXX:q-piano'                                      '1'
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========================== row from database ==========================
                                              'id'  1421217
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Bobby Gregg - va - Greaser Instrumentals Vol. 08/16 Tantalizing.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  122
                                           'genre'  rock-pop-surf
                                        'filesize'  2450398
                                           'mtime'  1620736915
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Bobby Gregg va 16 rock pop surf
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                                     'tag_release'  Greaser Instrumentals Vol. 08
                                       'tag_title'  Tantalizing
                                             'bpm'  124.5
                                    'search_title'  'tantalizing':1
                                   'search_artist'  'heirs':3 'melody':2 'the':1
                                  'search_release'  'greaser':1 'instrumentals':2 'vol':3,4
                                     'search_rest'  'bobby':5 'garage':2 'gregg':6 'pop':9 'punk':1 'rock':8 'stoner':4 'surf':3 'va':7
                                    'search_combo'  'bobby':13 'garage':10 'greaser':5C 'gregg':14 'heirs':4B 'instrumentals':6C 'melody':3B 'pop':17 'punk':9 'rock':16 'stoner':12 'surf':11 'tantalizing':1A 'the':2B 'va':15 'vol':7C,8C
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736914.6999555  (2021-05-11 14:41:54)
                             'size'  2450398