======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '202'
                                          'artist'  'Georges Brassens'
                                     'text_people'  ''
                                         'release'  "Live in Great Britain Live '73"
                                           'title'  "Il n'y a pas d'amour heureux"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chanson', 'francais', 'chanson francaise', 'french', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '144.438'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Live in Great Britain Live '73"
'TBPM' (BPM (beats per minute))                     '144.438'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         "Il n'y a pas d'amour heureux"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Georges Brassens'
'TRCK' (Track number/Position in set)               '04'
'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', 'francais', 'chanson francaise', 'french', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.01 dB'
'TXXX:replaygain_track_peak'                        '0.922933'

========================== row from database ==========================
                                              'id'  1499257
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Georges Brassens/Live in Great Britain/georges brassens - 04 - il n_y a pas d_amour heureux.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  202
                                           'genre'  loc-eur-france
                                        'filesize'  3244216
                                           'mtime'  1620535257
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe georges brassens 04 il n_y d_amour loc france
                                      'tag_artist'  Georges Brassens
                                     'tag_release'  Live in Great Britain Live '73
                                       'tag_title'  Il n'y a pas d'amour heureux
                                             'bpm'  144.438
                                    'search_title'  'a':5 'amour':8 'd':7 'damour':9 'heureux':10 'il':1 'n':2 'ny':4 'pas':6 'y':3
                                   'search_artist'  'brassens':2 'georges':1
                                  'search_release'  '73':5,6 'britain':4 'great':3 'in':2 'live':1
                                     'search_rest'  '00mid':1 'amour':10 'brassens':5 'd':9 'europe':3 'france':12 'georges':4 'il':6 'loc':11 'n':7 'north':2 'y':8
                                    'search_combo'  '00mid':19 '73':17C,18C 'a':5A 'amour':8A,28 'brassens':12B,23 'britain':16C 'd':7A,27 'damour':9A 'europe':21 'france':30 'georges':11B,22 'great':15C 'heureux':10A 'il':1A,24 'in':14C 'live':13C 'loc':29 'n':2A,25 'north':20 'ny':4A 'pas':6A 'y':3A,26
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           '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-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['chanson', 'francais', 'chanson francaise', 'french', 'singer songwriter']
                                        'tag_date'  1973
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620535256.964972  (2021-05-09 06:40:56)
                             'size'  3244216