======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '183'
                                          'artist'  'Marion Harris'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'When Alexander Takes His Ragtime Band'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'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'  "['20s', 'jazz', 'female vocalists', '1920s', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1918'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '145.8'
                                             'key'  '4A'
                                        '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)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '145.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '1918-06-18'
'TIT2' (Title/songname/content description)         'When Alexander Takes His Ragtime Band'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '183000'
'TPE1' (Lead performer(s)/Soloist(s))               'Marion Harris'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['20s', 'jazz', 'female vocalists', '1920s', 'blues']
'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'                        '+1.00 dB'
'TXXX:replaygain_track_peak'                        '0.482060'

========================== row from database ==========================
                                              'id'  1470761
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1918/Marion Harris - When Alexander Takes His Ragtime Band 18-6-1918.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  183
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  3775431
                                           'mtime'  1620524085
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1918 18 6 1918 prerock jb jazz vocal
                                      'tag_artist'  Marion Harris
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  When Alexander Takes His Ragtime Band
                                             'bpm'  145.8
                                    'search_title'  'alexander':2 'band':6 'his':4 'ragtime':5 'takes':3 'when':1
                                   'search_artist'  'harris':2 'marion':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '18':7 '1918':6 '6':8 'country':4 'exotica':2 'jazz':1 'jb':10 'oldies':3 'prerock':9 'vocal':11
                                    'search_combo'  '00oldiepop':18 '18':20 '1918':19 '6':21 'album':10C 'alexander':2A 'band':6A 'country':17 'exotica':15 'harris':8B 'his':4A 'jazz':14 'jb':23 'marion':7B 'non':9C 'nonalbum':11C 'oldies':16 'prerock':22 'ragtime':5A 'takes':3A 'tracks':12C,13C 'vocal':24 'when':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', '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'  ['20s', 'jazz', 'female vocalists', '1920s', 'blues']
                                        'tag_date'  1918
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524085.3266985  (2021-05-09 03:34:45)
                             'size'  3775431