======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '208'
                                          'artist'  'Ethel Waters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'At The New Jump Steady Ball'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'blues', 'jazz', 'female vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1921'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '112.4'
                                             'key'  '1A'
                                        '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))                     '112.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1921-03-21'
'TIT2' (Title/songname/content description)         'At The New Jump Steady Ball'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '208000'
'TPE1' (Lead performer(s)/Soloist(s))               'Ethel Waters'
'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:lastfmtags'                                   ['vocal jazz', 'blues', 'jazz', 'female vocalists']
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.05 dB'
'TXXX:replaygain_track_peak'                        '0.484346'

========================== row from database ==========================
                                              'id'  1473588
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1921/Ethel Waters - At The New Jump Steady Ball (1) 21-3-1921.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  208
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  4220991
                                           'mtime'  1620524873
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1921 (1) 21 3 1921 prerock jb jazz unsorted
                                      'tag_artist'  Ethel Waters
                                     'tag_release'  None
                                       'tag_title'  At The New Jump Steady Ball
                                             'bpm'  112.4
                                    'search_title'  'at':1 'ball':6 'jump':4 'new':3 'steady':5 'the':2
                                   'search_artist'  'ethel':1 'waters':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':7,8 '1921':6 '21':9 '3':10 'country':4 'exotica':2 'jazz':1 'jb':12 'oldies':3 'prerock':11 'unsorted':13
                                    'search_combo'  '00oldiepop':13 '1':15,16 '1921':14 '21':17 '3':18 'at':1A 'ball':6A 'country':12 'ethel':7B 'exotica':10 'jazz':9 'jb':20 'jump':4A 'new':3A 'oldies':11 'prerock':19 'steady':5A 'the':2A 'unsorted':21 'waters':8B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', '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'  ['vocal jazz', 'blues', 'jazz', 'female vocalists']
                                        'tag_date'  1921
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524872.6690917  (2021-05-09 03:47:52)
                             'size'  4220991