======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '106'
                                          'artist'  'Hans Dorrestijn'
                                     'text_people'  ''
                                         'release'  'Na Regen Komt Dorrestijn'
                                           'title'  "'k Ben zo Blij Dat Ik je Niet Vergeten Ben"
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['nationale volksheld', 'nederlandstalig', 'cabaret', 'amusing', 'dutch']"
                                     'discogstags'  "['stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'loc-eur-netherlands'
                                             'bpm'  '134.466'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Na Regen Komt Dorrestijn'
'TBPM' (BPM (beats per minute))                     '134.466'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-netherlands'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         "'k Ben zo Blij Dat Ik je Niet Vergeten Ben"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hans Dorrestijn'
'TRCK' (Track number/Position in set)               '20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'stage & screen'
'TXXX:lastfmtags'                                   ['nationale volksheld', 'nederlandstalig', 'cabaret', 'amusing', 'dutch']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.12 dB'
'TXXX:replaygain_track_peak'                        '0.624504'

========================== row from database ==========================
                                              'id'  1516196
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Hans Dorrestijn/MBZ;#Hans Dorrestijn;#Na Regen Komt Dorrestijn;#20;#_k Ben zo Blij Dat Ik je Niet Vergeten Ben.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  106
                                           'genre'  loc-eur-netherlands
                                        'filesize'  1703784
                                           'mtime'  1621629316
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch MBZ;#Hans Dorrestijn;#Na Dorrestijn;#20;#_k loc eur netherlands
                                      'tag_artist'  Hans Dorrestijn
                                     'tag_release'  Na Regen Komt Dorrestijn
                                       'tag_title'  'k Ben zo Blij Dat Ik je Niet Vergeten Ben
                                             'bpm'  134.466
                                    'search_title'  'ben':3 'blij':5 'dat':6 'ik':7 'je':8 'k':1,2 'niet':9 'vergeten':10 'zo':4
                                   'search_artist'  'dorrestijn':2 'hans':1
                                  'search_release'  'dorrestijn':4 'komt':3 'na':1 'regen':2
                                     'search_rest'  '00dutch':4 '00mid':1 '20':14,17 'dorrestijn':9,11,13,16 'eur':20 'europe':3 'hans':6,8 'k':15,18 'loc':19 'mbz':5,7 'na':10,12 'netherlands':21 'north':2
                                    'search_combo'  '00dutch':20 '00mid':17 '20':30,33 'ben':3A 'blij':5A 'dat':6A 'dorrestijn':12B,16C,25,27,29,32 'eur':36 'europe':19 'hans':11B,22,24 'ik':7A 'je':8A 'k':1A,2A,31,34 'komt':15C 'loc':35 'mbz':21,23 'na':13C,26,28 'netherlands':37 'niet':9A 'north':18 'regen':14C 'vergeten':10A 'zo':4A
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['nationale volksheld', 'nederlandstalig', 'cabaret', 'amusing', 'dutch']
                                        'tag_date'  1993
                                     'discogstags'  ['stage & screen']

============================== file details ==============================
                                           'mtime'  1621629316.0622683  (2021-05-21 22:35:16)
                             'size'  1703784