======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '3189'
                                          'artist'  'Simeon Ten Holt'
                                     'text_people'  ''
                                         'release'  'Canto Ostinato (cd3)'
                                           'title'  ''
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-2', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['minimalism', 'contemporary classical', 'piano', 'classical', 'dutch']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '102'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '139.2'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Canto Ostinato (cd3)'
'TBPM' (BPM (beats per minute))                     '139.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TENC' (Encoded by)                                 'LAME (DLL: 1.35, Engine: 3.93)'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Simeon Ten Holt'
'TRCK' (Track number/Position in set)               '102'
'TSSE' (Software/Hardware and settings used for encoding)  'CD ripper: ACXtractor, Encoder: LAME (DLL: 1.35, Engine: 3.93)'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['minimalism', 'contemporary classical', 'piano', 'classical', 'dutch']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+4.95 dB'
'TXXX:replaygain_track_peak'                        '0.845432'

========================== row from database ==========================
                                              'id'  1214329
                                            'path'  /data/Music/Bulk/00instruments-classical/Simeon ten Holt/Canto Ostinato/CD3.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  3189
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  76539599
                                           'mtime'  1637329804
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical ten CD3 prerock classical or classical instruments
                                      'tag_artist'  Simeon Ten Holt
                                     'tag_release'  Canto Ostinato (cd3)
                                       'tag_title'  None
                                             'bpm'  139.2
                                    'search_title'  None
                                   'search_artist'  'holt':3 'simeon':1 'ten':2
                                  'search_release'  'canto':1 'cd3':3,4 'ostinato':2
                                     'search_rest'  '00instruments':1 'cd3':4 'classical':2 'instruments':7 'or':6 'prerock':5 'ten':3
                                    'search_combo'  '00instruments':8 'canto':4C 'cd3':6C,7C,11 'classical':9 'holt':3B 'instruments':14 'or':13 'ostinato':5C 'prerock':12 'simeon':1B 'ten':2B,10
                                    'tag_tracknum'  102
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['minimalism', 'contemporary classical', 'piano', 'classical', 'dutch']
                                        'tag_date'  
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1637329804.2439868  (2021-11-19 14:50:04)
                             'size'  76539599