======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '171'
                                          'artist'  'Jacques Brel'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Les bourgeois'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['belgian', 'chanson', 'chanson francaise', 'french', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '142.809'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:\x9d\x07\x00\x00'                PRIV(owner='AverageLevel', data=b'\x9d\x07\x00\x00')
'PRIV:PeakValue:q`\x00\x00'                         PRIV(owner='PeakValue', data=b'q`\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '142.809'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TENC' (Encoded by)                                 'JdeM'
'TIT2' (Title/songname/content description)         'Les bourgeois'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jacques Brel'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['belgian', 'chanson', 'chanson francaise', 'french', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'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'                        '+2.44 dB'
'TXXX:replaygain_track_peak'                        '0.753471'

========================== row from database ==========================
                                              'id'  1265765
                                            'path'  /data/Music/Bulk/00localcharacter/Jacques Brel/Jacques Brel - Les Bourgeois.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  171
                                           'genre'  loc-eur-france
                                        'filesize'  4806345
                                           'mtime'  1620535960
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Bourgeois loc eur france
                                      'tag_artist'  Jacques Brel
                                     'tag_release'  None
                                       'tag_title'  Les bourgeois
                                             'bpm'  142.809
                                    'search_title'  'bourgeois':2 'les':1
                                   'search_artist'  'brel':2 'jacques':1
                                  'search_release'  
                                     'search_rest'  'bourgeois':1 'eur':3 'france':4 'loc':2
                                    'search_combo'  'bourgeois':2A,5 'brel':4B 'eur':7 'france':8 'jacques':3B 'les':1A 'loc':6
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['belgian', 'chanson', 'chanson francaise', 'french', 'singer songwriter']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620535960.1289124  (2021-05-09 06:52:40)
                             'size'  4806345