======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '147'
                                          'artist'  'harold schellinckx'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'oefening nummer drie'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-you'
                                             'bpm'  '88.322'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '88.322'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-you'
'TIT2' (Title/songname/content description)         'oefening nummer drie'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'harold schellinckx'
'TXXX:Mp3gain_minmax'                               '138,187'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.573258'

========================== row from database ==========================
                                              'id'  771752
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/You/2.8 harold schellinckx - oefening nummer drie.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  147
                                           'genre'  set-pl-you
                                        'filesize'  2361703
                                           'mtime'  1620356055
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes You 2.8 set pl you
                                      'tag_artist'  harold schellinckx
                                     'tag_release'  None
                                       'tag_title'  oefening nummer drie
                                             'bpm'  88.322
                                    'search_title'  'drie':3 'nummer':2 'oefening':1
                                   'search_artist'  'harold':1 'schellinckx':2
                                  'search_release'  
                                     'search_rest'  '0novelty':2 '0playlists':1 '2':5 '28':7 '8':6 'pl':9 'set':8 'themes':3 'you':4
                                    'search_combo'  '0novelty':7 '0playlists':6 '2':10 '28':12 '8':11 'drie':3A 'harold':4B 'nummer':2A 'oefening':1A 'pl':14 'schellinckx':5B 'set':13 'themes':8 'you':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356054.793778  (2021-05-07 04:54:14)
                             'size'  2361703