======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '165'
                                          'artist'  'Cootie Williams'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Beautiful Romance'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazztrumpet', 'jazz', 'trumpet', 'cootie', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted;mi-trumpet'
                                             'bpm'  '106.6'
                                             'key'  '9B'
                                        '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))                     '106.6'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-unsorted', 'mi-trumpet']
'TDRC' (Recording time)                             '1939-02-28'
'TIT2' (Title/songname/content description)         'Beautiful Romance'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '165000'
'TPE1' (Lead performer(s)/Soloist(s))               'Cootie Williams'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazztrumpet', 'jazz', 'trumpet', 'cootie', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.05 dB'
'TXXX:replaygain_track_peak'                        '0.663074'

========================== row from database ==========================
                                              'id'  1471674
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Cootie Williams (Ellington) - Beautiful Romance 28-2-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  165
                                           'genre'  prerock-jb-jazz-unsorted;mi-trumpet
                                        'filesize'  3351984
                                           'mtime'  1620527987
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 (Ellington) 28 2 1939 prerock jb jazz unsorted;mi trumpet
                                      'tag_artist'  Cootie Williams
                                     'tag_release'  None
                                       'tag_title'  Beautiful Romance
                                             'bpm'  106.6
                                    'search_title'  'beautiful':1 'romance':2
                                   'search_artist'  'cootie':1 'williams':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1939':6 '2':10 '28':9 'country':4 'ellington':7,8 'exotica':2 'jazz':1 'jb':12 'mi':14,16 'oldies':3 'prerock':11 'trumpet':17 'unsorted':13,15
                                    'search_combo'  '00oldiepop':9 '1939':10 '2':14 '28':13 'beautiful':1A 'cootie':3B 'country':8 'ellington':11,12 'exotica':6 'jazz':5 'jb':16 'mi':18,20 'oldies':7 'prerock':15 'romance':2A 'trumpet':21 'unsorted':17,19 'williams':4B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazztrumpet', 'jazz', 'trumpet', 'cootie', 'swing']
                                        'tag_date'  1939
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620527987.4052143  (2021-05-09 04:39:47)
                             'size'  3351984