======================== unified (from filesystem) ========================
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                                        'duration'  '102'
                                          'artist'  'Boards of Canada'
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                                         'release'  'The Campfire Headphase'
                                           'title'  'Constants Are Changing'
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                            'musicbrainz_artistid'  ''
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                                     'tracknumber'  '12'
                                      'tracktotal'  '15'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-ambient'
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                                             'key'  '8A'
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'TDOR' (Original release time)                      '2005'
'TDRC' (Recording time)                             '2005-10-17'
'TIT2' (Title/songname/content description)         'Constants Are Changing'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Boards of Canada'
'TPE2' (Band/orchestra/accompaniment)               'Boards of Canada'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Warp'
'TRCK' (Track number/Position in set)               '12/15'
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========================== row from database ==========================
                                              'id'  1287093
                                            'path'  /data/Music/Bulk/00poprockelectronic/Boards of Canada/[2005] The Campfire Headphase/12 Constants Are Changing.mp3
                                         'working'  None
                                         'bitrate'  211
                                    'duration_sec'  102
                                           'genre'  electronic-ambient
                                        'filesize'  2739601
                                           'mtime'  1636911077
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [2005] 12 electronic ambient
                                      'tag_artist'  Boards of Canada
                                     'tag_release'  The Campfire Headphase
                                       'tag_title'  Constants Are Changing
                                             'bpm'  145.79
                                    'search_title'  'are':2 'changing':3 'constants':1
                                   'search_artist'  'boards':1 'canada':3 'of':2
                                  'search_release'  'campfire':2 'headphase':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 '2005':2,3 'ambient':5 'electronic':4
                                    'search_combo'  '00poprockelectronic':10 '2005':11,12 'ambient':14 'are':2A 'boards':4B 'campfire':8C 'canada':6B 'changing':3A 'constants':1A 'electronic':13 'headphase':9C 'of':5B 'the':7C
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'idm', 'electronic', 'chillout', 'ambient']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911076.954329  (2021-11-14 18:31:16)
                             'size'  2739601