======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '180'
                                          'artist'  'Bourvil'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Caroline Caroline'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chanson francaise', 'french', 'chanson', 'all', '5 of 10 stars']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '125.860'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '125.860'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Caroline Caroline'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bourvil'
'TPE2' (Band/orchestra/accompaniment)               'Bourvil'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['chanson francaise', 'french', 'chanson', 'all', '5 of 10 stars']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.41 dB'
'TXXX:replaygain_track_peak'                        '0.365275'

========================== row from database ==========================
                                              'id'  1297564
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Bourvil - Caroline Caroline [].mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  180
                                           'genre'  loc-eur-france
                                        'filesize'  4333568
                                           'mtime'  1621630222
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] [] loc eur france
                                      'tag_artist'  Bourvil
                                     'tag_release'  None
                                       'tag_title'  Caroline Caroline
                                             'bpm'  125.86
                                    'search_title'  'caroline':1
                                   'search_artist'  'bourvil':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'eur':8 'files':5,6 'france':9 'loc':7 'loose':3,4 'unsorted':2
                                    'search_combo'  '00poprockelectronic':3 'bourvil':2B 'caroline':1A 'eur':10 'files':7,8 'france':11 'loc':9 'loose':5,6 'unsorted':4
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['chanson francaise', 'french', 'chanson', 'all', '5 of 10 stars']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630221.896352  (2021-05-21 22:50:21)
                             'size'  4333568