======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Maurice Chevalier'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Ca C' Est Passe Un Dimanche"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chanson', 'oldies', 'paris', 'chanson francaise', 'french', 'cabaret']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-french'
                                             'bpm'  '112.6'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '112.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-french'
'TDRC' (Recording time)                             '1939-09'
'TIT2' (Title/songname/content description)         "Ca C' Est Passe Un Dimanche"
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '187000'
'TPE1' (Lead performer(s)/Soloist(s))               'Maurice Chevalier'
'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', 'oldies', 'paris', 'chanson francaise', 'french', 'cabaret']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.552486'

========================== row from database ==========================
                                              'id'  1515114
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Maurice Chevalier - Ca C_ Est Passe Un Dimanche -9-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-french
                                        'filesize'  3778207
                                           'mtime'  1621627467
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 C_ 9 1939 prerock french
                                      'tag_artist'  Maurice Chevalier
                                     'tag_release'  None
                                       'tag_title'  Ca C' Est Passe Un Dimanche
                                             'bpm'  112.6
                                    'search_title'  'c':2,3 'ca':1 'dimanche':7 'est':4 'passe':5 'un':6
                                   'search_artist'  'chevalier':2 'maurice':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1939':6 '9':8 'c':7 'country':4 'exotica':2 'french':10 'jazz':1 'oldies':3 'prerock':9
                                    'search_combo'  '00oldiepop':14 '1939':15 '9':17 'c':2A,3A,16 'ca':1A 'chevalier':9B 'country':13 'dimanche':7A 'est':4A 'exotica':11 'french':19 'jazz':10 'maurice':8B 'oldies':12 'passe':5A 'prerock':18 'un':6A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10A
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['chanson', 'oldies', 'paris', 'chanson francaise', 'french', 'cabaret']
                                        'tag_date'  1939
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627467.2603002  (2021-05-21 22:04:27)
                             'size'  3778207