======================== unified (from filesystem) ========================
                                         'bitrate'  '320.007'
                                        'duration'  '124'
                                          'artist'  'Edu Comelles'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0021 Survey'
                                           'title'  'Morra'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-1', "
 "'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', 'q-drums-1', 'q-other-1', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['field recordings', 'impulsive habitat', 'ambient', 'sound art', 'drone']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '95'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Classwar Karaoke - 0021 Survey'
'TBPM' (BPM (beats per minute))                     '95'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TCOP' (Copyright message)                          ('Attribution-Noncommercial-Sharealike: Http: / / Creativecommons.Org / '
 'Licenses / By-Nc-Sa / 3.0 /')
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         'Morra'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Edu Comelles'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '30'
'TXXX:Access Rating'                                '10'
'TXXX:Dynamic Range (DR)'                           '13'
'TXXX:Dynamic Range (R128)'                         '3.2087600231170654'
'TXXX:Length'                                       '123986'
'TXXX:Peak Level (R128)'                            '+0.6 dBTP; +0.6 Left; +0.1 Right'
'TXXX:Peak Level (Sample)'                          '+0.0 dB; +0.0 Left; +0.0 Right'
'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:Tool Name'                                    'Media Center'
'TXXX:Tool Version'                                 '20.0.131'
'TXXX:Volume Level (R128)'                          '-8.1853799819946289'
'TXXX:Volume Level (ReplayGain)'                    '-3.1853799819946289'
'TXXX:lastfmtags'                                   ['field recordings', 'impulsive habitat', 'ambient', 'sound art', 'drone']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+5.85 dB'
'TXXX:replaygain_track_peak'                        '0.358736'

========================== row from database ==========================
                                              'id'  1387724
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Various - Classwar Karaoke - 0021 Survey/30 - Edu Comelles - Morra.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  124
                                           'genre'  electronic-unsorted
                                        'filesize'  5036026
                                           'mtime'  1622758902
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Various 30 electronic unsorted
                                      'tag_artist'  Edu Comelles
                                     'tag_release'  Classwar Karaoke - 0021 Survey
                                       'tag_title'  Morra
                                             'bpm'  95.0
                                    'search_title'  'morra':1
                                   'search_artist'  'comelles':2 'edu':1
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '30':2 'electronic':3 'unsorted':4 'various':1
                                    'search_combo'  '30':8 'classwar':4C 'comelles':3B 'edu':2B 'electronic':9 'karaoke':5C 'morra':1A 'survey':6C 'unsorted':10 'various':7
                                    'tag_tracknum'  30
                                      'num_images'  1
                                             'key'  1A
                                           '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-1', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['field recordings', 'impulsive habitat', 'ambient', 'sound art', 'drone']
                                        'tag_date'  2013
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622758901.6905868  (2021-06-04 00:21:41)
                             'size'  5036026