======================== unified (from filesystem) ========================
                                         'bitrate'  '198.174'
                                        'duration'  '197'
                                          'artist'  'Harrie Jekkers'
                                     'text_people'  'Harrie Jekkers&Koos Meinderts'
                                         'release'  'Mijn Ikken'
                                           'title'  'Mijn Moeder'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-1', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['funny', 'nederlandstalig', 'cabaret', 'nederlands', 'dutch']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '12'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'loc-eur-netherlands'
                                             'bpm'  '95.845'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Mijn Ikken'
'TBPM' (BPM (beats per minute))                     '95.845'
'TCOM' (Composer)                                   'Harrie Jekkers&Koos Meinderts'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-netherlands'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Mijn Moeder'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Harrie Jekkers'
'TRCK' (Track number/Position in set)               '9/12'
'TXXX:Encoding Params'                              'vers'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:UFIDhttp://www.cddb.com/id3/taginfo1.html'    '3CD3N75S5095318V0834FC7A6F0D4BCAC758FFF534EE90E6B6P1'
'TXXX:discogstags'                                  'pop'
'TXXX:iTunes_CDDB_IDs'                              '12++'
'TXXX:lastfmtags'                                   ['funny', 'nederlandstalig', 'cabaret', 'nederlands', 'dutch']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.37 dB'
'TXXX:replaygain_track_peak'                        '0.907674'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1490894
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Harrie Jekkers - Mijn Ikken/09 Mijn Moeder.mp3
                                         'working'  None
                                         'bitrate'  198
                                    'duration_sec'  197
                                           'genre'  loc-eur-netherlands
                                        'filesize'  4884183
                                           'mtime'  1621629317
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch 09 loc eur netherlands
                                      'tag_artist'  Harrie Jekkers
                                     'tag_release'  Mijn Ikken
                                       'tag_title'  Mijn Moeder
                                             'bpm'  95.845
                                    'search_title'  'mijn':1 'moeder':2
                                   'search_artist'  'harrie':1 'jekkers':2
                                  'search_release'  'ikken':2 'mijn':1
                                     'search_rest'  '00dutch':4 '00mid':1 'eur':6 'europe':3 'loc':5 'netherlands':7 'north':2
                                    'search_combo'  '00dutch':10 '00mid':7 'eur':12 'europe':9 'harrie':3B 'ikken':6C 'jekkers':4B 'loc':11 'mijn':1A,5C 'moeder':2A 'netherlands':13 'north':8
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funny', 'nederlandstalig', 'cabaret', 'nederlands', 'dutch']
                                        'tag_date'  1997
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1621629316.6528718  (2021-05-21 22:35:16)
                             'size'  4884183