======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '217'
                                          'artist'  'Nils Frahm'
                                     'text_people'  ''
                                         'release'  'The Bells'
                                           'title'  'Down Down'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
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 "'Q-PIANO-4', 'q-chart-3', 'q-drums-2', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'instrumental', 'piano', 'modern classical', "
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                                     'discogstags'  "['classical', 'contemporary']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '11'
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '137'
                                             'key'  '6B'
                                        'acoustid'  '731c6a2b-d5cc-4a3a-bd1a-58a537452534'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Bells'
'TBPM' (BPM (beats per minute))                     '137'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDOR' (Original release time)                      '2009'
'TDRC' (Recording time)                             '2010-02-01'
'TIT2' (Title/songname/content description)         'Down Down'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Nils Frahm'
'TPE2' (Band/orchestra/accompaniment)               'Nils Frahm'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Erased Tapes Records'
'TRCK' (Track number/Position in set)               '5/11'
'TSO2'                                              'Frahm, Nils'
'TSOP' (Performer sort order)                       'Frahm, Nils'
'TXXX:Acoustid Id'                                  '731c6a2b-d5cc-4a3a-bd1a-58a537452534'
'TXXX:Artists'                                      'Nils Frahm'
'TXXX:CATALOGNUMBER'                                'ERATP021CD'
'TXXX:MusicBrainz Album Artist Id'                  'd03a54bc-6e07-4c04-a8d4-7fbf2bd07a01'
'TXXX:MusicBrainz Album Id'                         'd1dc2a35-d7c3-3523-97c6-8e452d483b06'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'd03a54bc-6e07-4c04-a8d4-7fbf2bd07a01'
'TXXX:MusicBrainz Release Group Id'                 '7a26f832-f588-4adc-9ec8-951d2c2111d9'
'TXXX:MusicBrainz Release Track Id'                 '061af763-9c28-315f-b448-c94d0582a219'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['classical', 'contemporary']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'instrumental',
 'piano',
 'modern classical',
 'ambient']
'TXXX:originalyear'                                 '2009'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.64 dB'
'TXXX:replaygain_track_peak'                        '0.609904'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'88f6c5b0-c04f-4357-bc51-e21d78b83c7d')

========================== row from database ==========================
                                              'id'  205221
                                            'path'  /data/Music/Bulk/00instruments-classical/Nils Frahm/2009 - The Bells/05 - Down Down.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  217
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  8729864
                                           'mtime'  1620574206
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 2009 05 prerock classical or classical instruments
                                      'tag_artist'  Nils Frahm
                                     'tag_release'  The Bells
                                       'tag_title'  Down Down
                                             'bpm'  137.0
                                    'search_title'  'down':1
                                   'search_artist'  'frahm':2 'nils':1
                                  'search_release'  'bells':2 'the':1
                                     'search_rest'  '00instruments':1 '2009':3 'classical':2 'instruments':6 'or':5 'prerock':4
                                    'search_combo'  '00instruments':6 '2009':8 'bells':5C 'classical':7 'down':1A 'frahm':3B 'instruments':11 'nils':2B 'or':10 'prerock':9 'the':4C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'instrumental', 'piano', 'modern classical', 'ambient']
                                        'tag_date'  2010
                                     'discogstags'  ['classical', 'contemporary']

============================== file details ==============================
                                           'mtime'  1620574205.9783304  (2021-05-09 17:30:05)
                             'size'  8729864