======================== unified (from filesystem) ========================
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                                        'duration'  '258'
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                                             'key'  '10A'
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rest: ''

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

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'TKEY' (Initial key)                                '10A'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'

========================== row from database ==========================
                                              'id'  1538382
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Corrs/[03] The Corrs - Forgiven, Not Forgotten - Heaven Knows.mp3
                                         'working'  None
                                         'bitrate'  207
                                    'duration_sec'  258
                                           'genre'  
                                        'filesize'  6689089
                                           'mtime'  1662800466
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] Corrs [03] The Corrs Forgiven, Not Forgotten Heaven Knows
                                      'tag_artist'  None
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  102.0
                                    'search_title'  None
                                   'search_artist'  None
                                  'search_release'  
                                     'search_rest'  '03':5,6 '9amusing':2,3 'corrs':4 'forgiven':8,9 'forgotten':11 'heaven':12 'knows':13 'not':10 'prev':14 'prevset':1 'set':15 'the':7
                                    'search_combo'  '03':5,6 '9amusing':2,3 'corrs':4 'forgiven':8,9 'forgotten':11 'heaven':12 'knows':13 'not':10 'prev':14 'prevset':1 'set':15 'the':7
                                    'tag_tracknum'  None
                                      'num_images'  0
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                                           'quals'  ['q-bass-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800466.1555657  (2022-09-10 11:01:06)
                             'size'  6689089