======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '276'
                                          'artist'  'Hans Dorrestijn'
                                     'text_people'  ''
                                         'release'  'Na Regen Komt Dorrestijn'
                                           'title'  'De Eerste Rij'
                                           'quals'  "['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '140.0'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Na Regen Komt Dorrestijn'
'TBPM' (BPM (beats per minute))                     '140.0'
'TIT2' (Title/songname/content description)         'De Eerste Rij'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Hans Dorrestijn'
'TPE2' (Band/orchestra/accompaniment)               'Hans Dorrestijn'
'TRCK' (Track number/Position in set)               '17'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.25 dB'
'TXXX:replaygain_track_peak'                        '0.673638'

========================== row from database ==========================
                                              'id'  1538453
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Dorrestijn/De Eerste Rij.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  276
                                           'genre'  
                                        'filesize'  4422530
                                           'mtime'  1662800544
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing]
                                      'tag_artist'  Hans Dorrestijn
                                     'tag_release'  Na Regen Komt Dorrestijn
                                       'tag_title'  De Eerste Rij
                                             'bpm'  140.0
                                    'search_title'  'de':1 'eerste':2 'rij':3
                                   'search_artist'  'dorrestijn':2 'hans':1
                                  'search_release'  'dorrestijn':4 'komt':3 'na':1 'regen':2
                                     'search_rest'  '9amusing':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '9amusing':11,12 'de':1A 'dorrestijn':5B,9C 'eerste':2A 'hans':4B 'komt':8C 'na':6C 'prev':13 'prevset':10 'regen':7C 'rij':3A 'set':14
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800544.4410388  (2022-09-10 11:02:24)
                             'size'  4422530