======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '256'
                                          'artist'  'Carlos Futura'
                                     'text_people'  ''
                                         'release'  'Bach For Computer'
                                           'title'  'Bach For Bachelors (Preludium 21 - Übungen für Anfänger)'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['contemporary classical', 'electronic', 'electronic baroque', "
 "'experimental', 'ambient']")
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  'A2'
                                      'tracktotal'  ''
                                            'date'  '1979'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '98.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000069C 0000066E 00004403 0000856E 0001C2EA 0001D7C0 00008000 00008000 '
 '00004F00 0000562A')
'TALB' (Album/Movie/Show title)                     'Bach For Computer'
'TBPM' (BPM (beats per minute))                     '98.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1979'
'TENC' (Encoded by)                                 'Tag&Rename 3.0.6'
'TIT2' (Title/songname/content description)         'Bach For Bachelors (Preludium 21 - Übungen für Anfänger)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carlos Futura'
'TRCK' (Track number/Position in set)               'A2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'electronic',
 'electronic baroque',
 'experimental',
 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.07 dB'
'TXXX:replaygain_track_peak'                        '0.719672'

========================== row from database ==========================
                                              'id'  1365127
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Carlos Futura - Bach For Computer/Bach For Bachelors (Preludium 21 - Übungen für Anfänger).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  256
                                           'genre'  electronic-experimental
                                        'filesize'  10329452
                                           'mtime'  1636916829
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Übungen für Anfänger) electronic experimental
                                      'tag_artist'  Carlos Futura
                                     'tag_release'  Bach For Computer
                                       'tag_title'  Bach For Bachelors (Preludium 21 - Übungen für Anfänger)
                                             'bpm'  98.7
                                    'search_title'  '21':6 'anfanger':11,12,13,14 'bach':1 'bachelors':3 'for':2 'fur':9,10 'preludium':4,5 'ubungen':7,8
                                   'search_artist'  'carlos':1 'futura':2
                                  'search_release'  'bach':1 'computer':3 'for':2
                                     'search_rest'  'anfanger':5,6,7,8 'electronic':9 'experimental':10 'fur':3,4 'ubungen':1,2
                                    'search_combo'  '21':6A 'anfanger':11A,12A,13A,14A,24,25,26,27 'bach':1A,17C 'bachelors':3A 'carlos':15B 'computer':19C 'electronic':28 'experimental':29 'for':2A,18C 'fur':9A,10A,22,23 'futura':16B 'preludium':4A,5A 'ubungen':7A,8A,20,21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'electronic', 'electronic baroque', 'experimental', 'ambient']
                                        'tag_date'  1979
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1636916829.2268088  (2021-11-14 20:07:09)
                             'size'  10329452