======================== unified (from filesystem) ========================
                                         'bitrate'  '171.642'
                                        'duration'  '373'
                                          'artist'  'Erik Truffaz Quartet'
                                     'text_people'  ''
                                         'release'  'Progsoup 38'
                                           'title'  'Les Nuits De Monsieur Naj'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'trumpet', 'nu jazz', 'contemporary jazz']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '123.557'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:\x8b\r\x00\x00'                  PRIV(owner='AverageLevel', data=b'\x8b\r\x00\x00')
'PRIV:PeakValue:yC\x00\x00'                         PRIV(owner='PeakValue', data=b'yC\x00\x00')
'TALB' (Album/Movie/Show title)                     'Progsoup 38'
'TBPM' (BPM (beats per minute))                     '123.557'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 "LAME Ain't an MP3 Encoder"
'TIT2' (Title/songname/content description)         'Les Nuits De Monsieur Naj'
'TKEY' (Initial key)                                '9B'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Erik Truffaz Quartet'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz', 'trumpet', 'nu jazz', 'contemporary jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.78 dB'
'TXXX:replaygain_track_peak'                        '0.527148'

========================== row from database ==========================
                                              'id'  1415302
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 38 (fusionsoup)/2192 erik truffaz quartet - les nuits de monsieur naj.mp3
                                         'working'  None
                                         'bitrate'  171
                                    'duration_sec'  373
                                           'genre'  rock-cppex-progressive
                                        'filesize'  8018026
                                           'mtime'  1620737299
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup (fusionsoup) 2192 erik truffaz quartet les nuits de monsieur naj rock cppex progressive
                                      'tag_artist'  Erik Truffaz Quartet
                                     'tag_release'  Progsoup 38
                                       'tag_title'  Les Nuits De Monsieur Naj
                                             'bpm'  123.557
                                    'search_title'  'de':3 'les':1 'monsieur':4 'naj':5 'nuits':2
                                   'search_artist'  'erik':1 'quartet':3 'truffaz':2
                                  'search_release'  '38':2 'progsoup':1
                                     'search_rest'  '2192':5 'classicprogpsy':1 'cppex':15 'de':11 'erik':6 'fusionsoup':3,4 'les':9 'monsieur':12 'naj':13 'nuits':10 'progressive':16 'progsoup':2 'quartet':8 'rock':14 'truffaz':7
                                    'search_combo'  '2192':15 '38':10C 'classicprogpsy':11 'cppex':25 'de':3A,21 'erik':6B,16 'fusionsoup':13,14 'les':1A,19 'monsieur':4A,22 'naj':5A,23 'nuits':2A,20 'progressive':26 'progsoup':9C,12 'quartet':8B,18 'rock':24 'truffaz':7B,17
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'trumpet', 'nu jazz', 'contemporary jazz']
                                        'tag_date'  2007
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620737298.6279044  (2021-05-11 14:48:18)
                             'size'  8018026