======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '252'
                                          'artist'  'Belinda Carlisle'
                                     'text_people'  ''
                                         'release'  'The Collection'
                                           'title'  'Little Black Book'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'female vocalists', 'pop', 'summer']"
                                     'discogstags'  "['rock', 'pop', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio'
                                             'bpm'  '127.204'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Collection'
'TBPM' (BPM (beats per minute))                     '127.204'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Little Black Book'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Belinda Carlisle'
'TRCK' (Track number/Position in set)               '7'
'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:discogstags'                                  ['rock', 'pop', 'pop rock']
'TXXX:lastfmtags'                                   ['80s', 'female vocalists', 'pop', 'summer']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.83 dB'
'TXXX:replaygain_track_peak'                        '0.508339'

========================== row from database ==========================
                                              'id'  1406333
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Belinda Carlisle/2002 - Collection, The/07_little_black_book-wlm.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  252
                                           'genre'  electronic-generic or radio
                                        'filesize'  6053780
                                           'mtime'  1636136060
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 2002 Collection, 07_little_black_book wlm electronic generic or radio
                                      'tag_artist'  Belinda Carlisle
                                     'tag_release'  The Collection
                                       'tag_title'  Little Black Book
                                             'bpm'  127.204
                                    'search_title'  'black':2 'book':3 'little':1
                                   'search_artist'  'belinda':1 'carlisle':2
                                  'search_release'  'collection':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '07':8 '2002':5 'black':10 'book':11 'collection':6,7 'dance':3 'electronic':13 'generic':2 'little':9 'or':14 'radio':15 'trapbeat':4 'wlm':12
                                    'search_combo'  '00poprockelectronic':8 '07':15 '2002':12 'belinda':4B 'black':2A,17 'book':3A,18 'carlisle':5B 'collection':7C,13,14 'dance':10 'electronic':20 'generic':9 'little':1A,16 'or':21 'radio':22 'the':6C 'trapbeat':11 'wlm':19
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  10A
                                           '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-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'female vocalists', 'pop', 'summer']
                                        'tag_date'  1980
                                     'discogstags'  ['rock', 'pop', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636136060.4664607  (2021-11-05 19:14:20)
                             'size'  6053780