======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '206'
                                          'artist'  'Georges Brassens'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'La Ballade des gens qui sont nés quelque part'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-1', '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'  '1950'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '108.996'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '108.996'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'La Ballade des gens qui sont nés quelque part'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Georges Brassens'
'TRCK' (Track number/Position in set)               '04'
'TSOP' (Performer sort order)                       'Brassens, Georges'
'TXXX:Artists'                                      'Georges Brassens'
'TXXX:MusicBrainz Artist Id'                        'b58165ba-ac55-49a1-8855-caf16c68f5f2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['chanson', 'francais', 'chanson francaise', 'french', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.61 dB'
'TXXX:replaygain_track_peak'                        '0.799731'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'68529141-0c8e-4f3f-a204-249a33c1aa1b')

========================== row from database ==========================
                                              'id'  1390695
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Georges Brassens/Mourir pour des Idées/georges brassens_mourir_04 - la ballade des gens qui sont nés quelque part.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  206
                                           'genre'  loc-eur-france
                                        'filesize'  3305439
                                           'mtime'  1620535287
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe Mourir pour Idées georges brassens_mourir_04 ballade loc eur france
                                      'tag_artist'  Georges Brassens
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  La Ballade des gens qui sont nés quelque part
                                             'bpm'  108.996
                                    'search_title'  'ballade':2 'des':3 'gens':4 'la':1 'nes':7,8 'part':10 'quelque':9 'qui':5 'sont':6
                                   'search_artist'  'brassens':2 'georges':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00mid':1 '04':11 'ballade':12 'brassens':9 'eur':14 'europe':3 'france':15 'georges':8 'idees':6,7 'loc':13 'mourir':4,10 'north':2 'pour':5
                                    'search_combo'  '00mid':18 '04':28 'album':14C 'ballade':2A,29 'brassens':12B,26 'des':3A 'eur':31 'europe':20 'france':32 'gens':4A 'georges':11B,25 'idees':23,24 'la':1A 'loc':30 'mourir':21,27 'nes':7A,8A 'non':13C 'nonalbum':15C 'north':19 'part':10A 'pour':22 'quelque':9A 'qui':5A 'sont':6A 'tracks':16C,17C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['chanson', 'francais', 'chanson francaise', 'french', 'singer songwriter']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620535287.3250086  (2021-05-09 06:41:27)
                             'size'  3305439