======================== unified (from filesystem) ========================
                                         'bitrate'  '180.049'
                                        'duration'  '205'
                                          'artist'  'Serge Gainsbourg'
                                     'text_people'  ''
                                         'release'  'Histoire De Melody Nelson'
                                           'title'  'En Melody'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chanson', 'chanson francaise', 'pop', 'french', 'french pop']"
                                     'discogstags'  "['rock', 'pop', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '143.619'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Histoire De Melody Nelson'
'TBPM' (BPM (beats per minute))                     '143.619'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'En Melody'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Serge Gainsbourg'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'pop', 'pop rock']
'TXXX:lastfmtags'                                   ['chanson', 'chanson francaise', 'pop', 'french', 'french pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.687024'

========================== row from database ==========================
                                              'id'  645062
                                            'path'  /data/Music/Bulk/00localcharacter/1971 - Histoire De Melody Nelson/06 - En Melody.mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  205
                                           'genre'  loc-eur-france
                                        'filesize'  4633110
                                           'mtime'  1620535786
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 1971 06 loc eur france
                                      'tag_artist'  Serge Gainsbourg
                                     'tag_release'  Histoire De Melody Nelson
                                       'tag_title'  En Melody
                                             'bpm'  143.619
                                    'search_title'  'en':1 'melody':2
                                   'search_artist'  'gainsbourg':2 'serge':1
                                  'search_release'  'de':2 'histoire':1 'melody':3 'nelson':4
                                     'search_rest'  '1971':1 'eur':3 'france':4 'loc':2
                                    'search_combo'  '1971':9 'de':6C 'en':1A 'eur':11 'france':12 'gainsbourg':4B 'histoire':5C 'loc':10 'melody':2A,7C 'nelson':8C 'serge':3B
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['chanson', 'chanson francaise', 'pop', 'french', 'french pop']
                                        'tag_date'  1971
                                     'discogstags'  ['rock', 'pop', 'pop rock']

============================== file details ==============================
                                           'mtime'  1620535785.5058365  (2021-05-09 06:49:45)
                             'size'  4633110