======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '194'
                                          'artist'  'paul robeson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'lonely road (song of freedom 1934)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', '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'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '94.108'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '94.108'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'lonely road (song of freedom 1934)'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'paul robeson'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['american', 'blues', 'spiritual', 'folk', 'gospel']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'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'                        '+0.86 dB'
'TXXX:replaygain_track_peak'                        '0.592239'

========================== row from database ==========================
                                              'id'  1526380
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/paul robeson - lonely road (song of freedom 1934).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  194
                                           'genre'  prerock-vocal
                                        'filesize'  3123200
                                           'mtime'  1621853368
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection prerock vocal
                                      'tag_artist'  paul robeson
                                     'tag_release'  None
                                       'tag_title'  lonely road (song of freedom 1934)
                                             'bpm'  94.108
                                    'search_title'  '1934':7,8 'freedom':6 'lonely':1 'of':5 'road':2 'song':3,4
                                   'search_artist'  'paul':1 'robeson':2
                                  'search_release'  
                                     'search_rest'  '30':5 'collection':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 's':6 'vocal':9
                                    'search_combo'  '1934':7A,8A '30':15 'collection':17 'country':14 'exotica':12 'freedom':6A 'jazz':11 'lonely':1A 'of':5A 'oldies':13 'paul':9B 'prerock':18 'road':2A 'robeson':10B 's':16 'song':3A,4A 'vocal':19
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  12B
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['american', 'blues', 'spiritual', 'folk', 'gospel']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853367.8814664  (2021-05-24 12:49:27)
                             'size'  3123200