======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '168'
                                          'artist'  'Maurice Chevalier'
                                     'text_people'  ''
                                         'release'  'Pathé 4374 Mx 2087'
                                           'title'  "C' Etait Une Fille"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', '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'  '1920'
                                        'comments'  ''
                                           'genre'  'prerock-french'
                                             'bpm'  '97.1'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Pathé 4374 Mx 2087'
'TBPM' (BPM (beats per minute))                     '97.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-french'
'TDRC' (Recording time)                             '1920'
'TIT2' (Title/songname/content description)         "C' Etait Une Fille"
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '168000'
'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'                                       '1'
'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'                        '+1.90 dB'
'TXXX:replaygain_track_peak'                        '0.827355'

========================== row from database ==========================
                                              'id'  1500413
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920/Maurice Chevalier - C_ était Une Fille 1920.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  168
                                           'genre'  prerock-french
                                        'filesize'  3400476
                                           'mtime'  1621627106
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920 C_ était 1920 prerock french
                                      'tag_artist'  Maurice Chevalier
                                     'tag_release'  Pathé 4374 Mx 2087
                                       'tag_title'  C' Etait Une Fille
                                             'bpm'  97.1
                                    'search_title'  'c':1,2 'etait':3 'fille':5 'une':4
                                   'search_artist'  'chevalier':2 'maurice':1
                                  'search_release'  '2087':5 '4374':3 'mx':4 'pathe':1,2
                                     'search_rest'  '00oldiepop':5 '1920':6 'c':7 'country':4 'etait':8,9 'exotica':2 'french':11 'jazz':1 'oldies':3 'prerock':10
                                    'search_combo'  '00oldiepop':17 '1920':18 '2087':12C '4374':10C 'c':1A,2A,19 'chevalier':7B 'country':16 'etait':3A,20,21 'exotica':14 'fille':5A 'french':23 'jazz':13 'maurice':6B 'mx':11C 'oldies':15 'pathe':8C,9C 'prerock':22 'une':4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           '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-1', 'q-grit-1']
                                      'lastfmtags'  ['chanson', 'oldies', 'paris', 'chanson francaise', 'french', 'cabaret']
                                        'tag_date'  1920
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627105.6364076  (2021-05-21 21:58:25)
                             'size'  3400476