======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '252'
                                          'artist'  'Kopfschmerztablette'
                                     'text_people'  ''
                                         'release'  'Die Gezeiten Der Zeit'
                                           'title'  'problem child'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-UNU-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'industrial', 'experimental', 'noise']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '141.2'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Die Gezeiten Der Zeit'
'TBPM' (BPM (beats per minute))                     '141.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'problem child'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kopfschmerztablette'
'TPE2' (Band/orchestra/accompaniment)               'Kopfschmerztablette'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['german', 'industrial', 'experimental', 'noise']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.63 dB'
'TXXX:replaygain_track_peak'                        '0.355768'

========================== row from database ==========================
                                              'id'  759906
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Kopfschmerztablette - Die Gezeiten Der Zeit - 1991/11-problem child.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  252
                                           'genre'  electronic-unsorted
                                        'filesize'  6322871
                                           'mtime'  1636758053
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 1991 11 electronic unsorted
                                      'tag_artist'  Kopfschmerztablette
                                     'tag_release'  Die Gezeiten Der Zeit
                                       'tag_title'  problem child
                                             'bpm'  141.2
                                    'search_title'  'child':2 'problem':1
                                   'search_artist'  'kopfschmerztablette':1
                                  'search_release'  'der':3 'die':1 'gezeiten':2 'zeit':4
                                     'search_rest'  '1991':1 'electronic':2 'unsorted':3
                                    'search_combo'  '1991':8 'child':2A 'der':6C 'die':4C 'electronic':9 'gezeiten':5C 'kopfschmerztablette':3B 'problem':1A 'unsorted':10 'zeit':7C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['german', 'industrial', 'experimental', 'noise']
                                        'tag_date'  1991
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636758053.182883  (2021-11-13 00:00:53)
                             'size'  6322871