======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '221'
                                          'artist'  'Urban Cookie Collective'
                                     'text_people'  ''
                                         'release'  "Best Ever Top 100 90's  "
                                           'title'  'The Key, the Secret'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'eurodance', 'techno', 'house', '90s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-zomg80s'
                                             'bpm'  '129.813'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Best Ever Top 100 90's  "
'TBPM' (BPM (beats per minute))                     '129.813'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-zomg80s']
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'lacadau'
'TIT2' (Title/songname/content description)         'The Key, the Secret'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Urban Cookie Collective'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'eurodance', 'techno', 'house', '90s']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.525176'

========================== row from database ==========================
                                              'id'  1321500
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/13_The_Key_the_Secret.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  221
                                           'genre'  electronic-generic or radio-unsorted;set-pl-zomg80s
                                        'filesize'  8874685
                                           'mtime'  1621696035
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 13_The_Key_the_Secret electronic generic or radio unsorted;set pl zomg80s
                                      'tag_artist'  Urban Cookie Collective
                                     'tag_release'  Best Ever Top 100 90's  
                                       'tag_title'  The Key, the Secret
                                             'bpm'  129.813
                                    'search_title'  'key':2,3 'secret':4 'the':1
                                   'search_artist'  'collective':3 'cookie':2 'urban':1
                                  'search_release'  '100':4 '90':5 '90s':7 'best':1 'ever':2 's':6 'top':3
                                     'search_rest'  '00poprockelectronic':1 '13':3 '90s':2 'electronic':8 'generic':9 'key':5 'or':10 'pl':16 'radio':11 'secret':7 'set':13,15 'the':4,6 'unsorted':12,14 'zomg80s':17
                                    'search_combo'  '00poprockelectronic':15 '100':11C '13':17 '90':12C '90s':14C,16 'best':8C 'collective':7B 'cookie':6B 'electronic':22 'ever':9C 'generic':23 'key':2A,3A,19 'or':24 'pl':30 'radio':25 's':13C 'secret':4A,21 'set':27,29 'the':1A,18,20 'top':10C 'unsorted':26,28 'urban':5B 'zomg80s':31
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'eurodance', 'techno', 'house', '90s']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696035.2738295  (2021-05-22 17:07:15)
                             'size'  8874685