======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '356'
                                          'artist'  'Nils Frahm'
                                     'text_people'  ''
                                         'release'  'Juno'
                                           'title'  'For'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'instrumental', 'piano', 'modern classical', "
 "'ambient']")
                                     'discogstags'  "['contemporary', 'electronic', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '114.738'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000003C4 00000372 00002FF4 0000372B 000369C6 000361D0 000079B9 000079F1 '
 '0002707D 000128D6')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AE0 0000000000EF8E90 00000000 00D93415 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Juno'
'TBPM' (BPM (beats per minute))                     '114.738'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2011'
'TENC' (Encoded by)                                 'iTunes 10.3.1'
'TIT2' (Title/songname/content description)         'For'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nils Frahm'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['contemporary', 'electronic', 'classical']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'instrumental',
 'piano',
 'modern classical',
 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '-1.75 dB'
'TXXX:replaygain_track_peak'                        '0.565789'

========================== row from database ==========================
                                              'id'  198354
                                            'path'  /data/Music/Bulk/00instruments-classical/Nils Frahm/2011 - Juno/01 - For.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  356
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  15387098
                                           'mtime'  1620561703
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 2011 01 prerock classical classical instruments
                                      'tag_artist'  Nils Frahm
                                     'tag_release'  Juno
                                       'tag_title'  For
                                             'bpm'  114.738
                                    'search_title'  'for':1
                                   'search_artist'  'frahm':2 'nils':1
                                  'search_release'  'juno':1
                                     'search_rest'  '00instruments':1 '2011':3 'classical':2 'instruments':5 'prerock':4
                                    'search_combo'  '00instruments':5 '2011':7 'classical':6 'for':1A 'frahm':3B 'instruments':9 'juno':4C 'nils':2B 'prerock':8
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'instrumental', 'piano', 'modern classical', 'ambient']
                                        'tag_date'  2011
                                     'discogstags'  ['contemporary', 'electronic', 'classical']

============================== file details ==============================
                                           'mtime'  1620561702.6829815  (2021-05-09 14:01:42)
                             'size'  15387098