======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '233'
                                          'artist'  'Jean-Baptiste Lully'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Goodbye Dulina'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['composers', 'classical', 'french', 'baroquefrancais', 'baroque', 'jean "
 "baptiste lully']")
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '109.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '109.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TIT2' (Title/songname/content description)         'Goodbye Dulina'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jean-Baptiste Lully'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.19.100'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'isommp42'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['composers',
 'classical',
 'french',
 'baroquefrancais',
 'baroque',
 'jean baptiste lully']
'TXXX:major_brand'                                  'mp42'
'TXXX:minor_version'                                '0'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.81 dB'
'TXXX:replaygain_track_peak'                        '0.526921'

========================== row from database ==========================
                                              'id'  1353036
                                            'path'  /data/Music/Bulk/00poprockelectronic/LULLY/Lully - Goodbye Dulina.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  233
                                           'genre'  electronic-unsorted
                                        'filesize'  5598511
                                           'mtime'  1621630173
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic LULLY electronic unsorted
                                      'tag_artist'  Jean-Baptiste Lully
                                     'tag_release'  None
                                       'tag_title'  Goodbye Dulina
                                             'bpm'  109.5
                                    'search_title'  'dulina':2 'goodbye':1
                                   'search_artist'  'baptiste':2 'jean':1 'jeanbaptiste':3 'lully':4
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'electronic':3 'lully':2 'unsorted':4
                                    'search_combo'  '00poprockelectronic':7 'baptiste':4B 'dulina':2A 'electronic':9 'goodbye':1A 'jean':3B 'jeanbaptiste':5B 'lully':6B,8 'unsorted':10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['composers', 'classical', 'french', 'baroquefrancais', 'baroque', 'jean baptiste lully']
                                        'tag_date'  
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1621630173.4177563  (2021-05-21 22:49:33)
                             'size'  5598511