======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '340'
                                          'artist'  'Kalistongue'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0013 Survey'
                                           'title'  'Goodbye July'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  '36'
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '89.5'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=255)
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Classwar Karaoke - 0013 Survey'
'TBPM' (BPM (beats per minute))                     '89.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Goodbye July'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kalistongue'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Classwar Karaoke'
'TRCK' (Track number/Position in set)               '21/36'
'TXXX:COMPILATION'                                  '1'
'TXXX:DISCOGS_ARTIST_LINK'                          'Kalistongue'
'TXXX:DISCOGS_CATALOG'                              'CWK_0013'
'TXXX:DISCOGS_COUNTRY'                              'Germany'
'TXXX:DISCOGS_LABEL_LINK'                           'Classwar%20Karaoke'
'TXXX:DISCOGS_ORIGINAL_TRACK_NUMBER'                '21'
'TXXX:DISCOGS_RELEASED'                             '28 Feb 2011'
'TXXX:DISCOGS_RELEASE_ID'                           '2746080'
'TXXX:DISCOGS_RELEASE_MONTH'                        '02'
'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:STYLE'                                        ['Musique Concrète',
 'Abstract',
 'Drone',
 'Noise',
 'Dark Ambient',
 'Industrial',
 'Experimental']
'TXXX:discogstags'                                  ['electronic', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.83 dB'
'TXXX:replaygain_track_peak'                        '0.534950'

========================== row from database ==========================
                                              'id'  1385643
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Gurdonark - Various Artists - Classwar Karaoke - 0013 Survey (2011)/21. Kalistongue - Goodbye July.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  340
                                           'genre'  electronic-unsorted
                                        'filesize'  13629993
                                           'mtime'  1622758918
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Gurdonark Various Artists (2011) 21. electronic unsorted
                                      'tag_artist'  Kalistongue
                                     'tag_release'  Classwar Karaoke - 0013 Survey
                                       'tag_title'  Goodbye July
                                             'bpm'  89.5
                                    'search_title'  'goodbye':1 'july':2
                                   'search_artist'  'kalistongue':1
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '2011':4,5 '21':6,7 'artists':3 'electronic':8 'gurdonark':1 'unsorted':9 'various':2
                                    'search_combo'  '2011':10,11 '21':12,13 'artists':9 'classwar':4C 'electronic':14 'goodbye':1A 'gurdonark':7 'july':2A 'kalistongue':3B 'karaoke':5C 'survey':6C 'unsorted':15 'various':8
                                    'tag_tracknum'  21
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2011
                                     'discogstags'  ['electronic', 'ambient']

============================== file details ==============================
                                           'mtime'  1622758917.7717702  (2021-06-04 00:21:57)
                             'size'  13629993