======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '188'
                                          'artist'  'paul robeson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'ho! ho! - the wagon song (king solomons mines)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['american', 'blues', 'spiritual', 'folk', 'gospel']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '119.900'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '119.900'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'ho! ho! - the wagon song (king solomons mines)'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'paul robeson'
'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'                                   ['american', 'blues', 'spiritual', 'folk', 'gospel']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+1.15 dB'
'TXXX:replaygain_track_peak'                        '0.347925'

========================== row from database ==========================
                                              'id'  1528569
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/paul robeson - ho! ho! - the wagon song (king solomons mines).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  188
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3028992
                                           'mtime'  1620527920
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection prerock jb jazz unsorted
                                      'tag_artist'  paul robeson
                                     'tag_release'  None
                                       'tag_title'  ho! ho! - the wagon song (king solomons mines)
                                             'bpm'  119.9
                                    'search_title'  'ho':1 'king':5,6 'mines':8,9 'solomons':7 'song':4 'the':2 'wagon':3
                                   'search_artist'  'paul':1 'robeson':2
                                  'search_release'  
                                     'search_rest'  '30':5 'collection':7 'country':4 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 's':6 'unsorted':10
                                    'search_combo'  '30':16 'collection':18 'country':15 'exotica':13 'ho':1A 'jazz':12 'jb':20 'king':5A,6A 'mines':8A,9A 'oldies':14 'paul':10B 'prerock':19 'robeson':11B 's':17 'solomons':7A 'song':4A 'the':2A 'unsorted':21 'wagon':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6B
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['american', 'blues', 'spiritual', 'folk', 'gospel']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527919.5351017  (2021-05-09 04:38:39)
                             'size'  3028992