======================== unified (from filesystem) ========================
                                         'bitrate'  '56.0'
                                        'duration'  '177'
                                          'artist'  'Rina Ketty'
                                     'text_people'  ''
                                         'release'  'Etoiles De La Chanson'
                                           'title'  "J' Attendrai"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['female vocalists', 'chanson', '30s', 'french']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  '22'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '115.3'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Etoiles De La Chanson'
'TBPM' (BPM (beats per minute))                     '115.3'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         "J' Attendrai"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Rina Ketty'
'TRCK' (Track number/Position in set)               '01/22'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, Fraunhofer acm, 56 kBit/s, 22,050 Hz, Stereo, HQ = off'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['female vocalists', 'chanson', '30s', 'french']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.72 dB'
'TXXX:replaygain_track_peak'                        '0.448801'

========================== row from database ==========================
                                              'id'  1506729
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Rina Ketty/Rina Ketty - J_ Attendrai.mp3
                                         'working'  None
                                         'bitrate'  56
                                    'duration_sec'  177
                                           'genre'  loc-eur-france
                                        'filesize'  1245104
                                           'mtime'  1620533135
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm J_ loc eur france
                                      'tag_artist'  Rina Ketty
                                     'tag_release'  Etoiles De La Chanson
                                       'tag_title'  J' Attendrai
                                             'bpm'  115.3
                                    'search_title'  'attendrai':3 'j':1,2
                                   'search_artist'  'ketty':2 'rina':1
                                  'search_release'  'chanson':4 'de':2 'etoiles':1 'la':3
                                     'search_rest'  'eur':3 'france':4 'j':1 'loc':2
                                    'search_combo'  'attendrai':3A 'chanson':9C 'de':7C 'etoiles':6C 'eur':12 'france':13 'j':1A,2A,10 'ketty':5B 'la':8C 'loc':11 'rina':4B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['female vocalists', 'chanson', '30s', 'french']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620533134.631329  (2021-05-09 06:05:34)
                             'size'  1245104