======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  'Margaret Young'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'High Brown Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', '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-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['female vocalists', '20s', 'jazz', '30s', 'easy listening']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1922'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '104.4'
                                             '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))                     '104.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1922-02'
'TIT2' (Title/songname/content description)         'High Brown Blues'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '186000'
'TPE1' (Lead performer(s)/Soloist(s))               'Margaret Young'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['female vocalists', '20s', 'jazz', '30s', 'easy listening']
'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'                        '+1.72 dB'
'TXXX:replaygain_track_peak'                        '0.555870'

========================== row from database ==========================
                                              'id'  1472251
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1922/Margaret Young - High Brown Blues -2-1922.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3806025
                                           'mtime'  1620525023
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1922 2 1922 prerock jb jazz unsorted
                                      'tag_artist'  Margaret Young
                                     'tag_release'  None
                                       'tag_title'  High Brown Blues
                                             'bpm'  104.4
                                    'search_title'  'blues':3 'brown':2 'high':1
                                   'search_artist'  'margaret':1 'young':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1922':6 '2':7 'country':4 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 'unsorted':10
                                    'search_combo'  '00oldiepop':10 '1922':11 '2':12 'blues':3A 'brown':2A 'country':9 'exotica':7 'high':1A 'jazz':6 'jb':14 'margaret':4B 'oldies':8 'prerock':13 'unsorted':15 'young':5B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', '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'  ['female vocalists', '20s', 'jazz', '30s', 'easy listening']
                                        'tag_date'  1922
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620525022.65401  (2021-05-09 03:50:22)
                             'size'  3806025