======================== unified (from filesystem) ========================
                                         'bitrate'  '199.855'
                                        'duration'  '114'
                                          'artist'  'Micatone'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'mars'
                                           'quals'  ("['Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['lounge', 'acid jazz', 'downtempo', 'nu jazz', 'chillout']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb'
                                             'bpm'  '129.6'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '129.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb'
'TIT2' (Title/songname/content description)         'mars'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Micatone'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['lounge', 'acid jazz', 'downtempo', 'nu jazz', 'chillout']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.505718'

========================== row from database ==========================
                                              'id'  1325788
                                            'path'  /data/Music/Bulk/00poprockelectronic/micatone - nomad songs/01 - mars.mp3
                                         'working'  None
                                         'bitrate'  199
                                    'duration_sec'  114
                                           'genre'  prerock-jb
                                        'filesize'  2863979
                                           'mtime'  1630249724
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic micatone nomad songs 01 prerock jb
                                      'tag_artist'  Micatone
                                     'tag_release'  None
                                       'tag_title'  mars
                                             'bpm'  129.6
                                    'search_title'  'mars':1
                                   'search_artist'  'micatone':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'jb':6 'micatone':2 'nomad':3 'prerock':5 'songs':4
                                    'search_combo'  '00poprockelectronic':3 'jb':8 'mars':1A 'micatone':2B,4 'nomad':5 'prerock':7 'songs':6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['lounge', 'acid jazz', 'downtempo', 'nu jazz', 'chillout']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1630249724.066625  (2021-08-29 17:08:44)
                             'size'  2863979