======================== unified (from filesystem) ========================
                                         'bitrate'  '256.006'
                                        'duration'  '268'
                                          'artist'  'Biosphere'
                                     'text_people'  ''
                                         'release'  'Dropsonde'
                                           'title'  'Dissolving Clouds'
                                           'quals'  "['q-piano-1', 'q-bass-1', 'q-vocals-1', 'q-drums-1', 'q-other-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'im-calmer'
                                             'bpm'  '88.4'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'album'                                             'Dropsonde'
'artist'                                            'Biosphere'
'bpm'                                               '88.4'
'date'                                              '2006'
'genre'                                             'im-calmer'
'key'                                               '5B'
'q-bass'                                            '1'
'q-drums'                                           '1'
'q-other'                                           '4'
'q-piano'                                           '1'
'q-vocals'                                          '1'
'replaygain_track_gain'                             '-0.36 dB'
'replaygain_track_peak'                             '0.434451'
'title'                                             'Dissolving Clouds'
'tracknumber'                                       '01'

========================== row from database ==========================
                                              'id'  1537169
                                            'path'  /data/Music/Other/F3/Biosphere/2006 - Dropsonde/01 Dissolving Clouds.ogg
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  268
                                           'genre'  im-calmer
                                        'filesize'  6889713
                                           'mtime'  1662800157
                                   'redo_metaread'  0
                                        'rest_str'   F3 2006 01 im calmer
                                      'tag_artist'  Biosphere
                                     'tag_release'  Dropsonde
                                       'tag_title'  Dissolving Clouds
                                             'bpm'  88.4
                                    'search_title'  'clouds':2 'dissolving':1
                                   'search_artist'  'biosphere':1
                                  'search_release'  'dropsonde':1
                                     'search_rest'  '2006':2 'calmer':4 'f3':1 'im':3
                                    'search_combo'  '2006':6 'biosphere':3B 'calmer':8 'clouds':2A 'dissolving':1A 'dropsonde':4C 'f3':5 'im':7
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['q-bass-1', 'q-other-4', 'q-drums-1', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800156.8455517  (2022-09-10 10:55:56)
                             'size'  6889713