======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '417'
                                          'artist'  'Ulrich Schnauss'
                                     'text_people'  ''
                                         'release'  'A Strangely Isolated Place'
                                           'title'  'A Letter from Home'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'idm', 'electronic', 'chillout', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '99.8'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:Ü$\x00\x00'                      PRIV(owner='AverageLevel', data=b'\xdc$\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'A Strangely Isolated Place'
'TBPM' (BPM (beats per minute))                     '99.8'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'A Letter from Home'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ulrich Schnauss'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'idm', 'electronic', 'chillout', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.03 dB'
'TXXX:replaygain_track_peak'                        '0.458387'

========================== row from database ==========================
                                              'id'  314305
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Ulrich Schnauss/A Strangely Isolated Place/03 - A Letter From Home.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  417
                                           'genre'  electronic
                                        'filesize'  13385613
                                           'mtime'  1636912801
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 03 From electronic
                                      'tag_artist'  Ulrich Schnauss
                                     'tag_release'  A Strangely Isolated Place
                                       'tag_title'  A Letter from Home
                                             'bpm'  99.8
                                    'search_title'  'a':1 'from':3 'home':4 'letter':2
                                   'search_artist'  'schnauss':2 'ulrich':1
                                  'search_release'  'a':1 'isolated':3 'place':4 'strangely':2
                                     'search_rest'  'electronic':2 'from':1
                                    'search_combo'  'a':1A,7C 'electronic':12 'from':3A,11 'home':4A 'isolated':9C 'letter':2A 'place':10C 'schnauss':6B 'strangely':8C 'ulrich':5B
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'idm', 'electronic', 'chillout', 'ambient']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636912801.1859682  (2021-11-14 19:00:01)
                             'size'  13385613