======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '207'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Canciones infantiles Vernel'
                                           'title'  'David'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'loc-eur-spain;set-pl-mor'
                                             'bpm'  '143.314'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Canciones infantiles Vernel'
'TBPM' (BPM (beats per minute))                     '143.314'
'TCON' (Content type, a.k.a. Genre)                 ['loc-eur-spain', 'set-pl-mor']
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'David'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.23 dB'
'TXXX:replaygain_track_peak'                        '0.398314'

========================== row from database ==========================
                                              'id'  1392199
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Canciones Infantiles Vernel/07 - David.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  207
                                           'genre'  loc-eur-spain;set-pl-mor
                                        'filesize'  4049783
                                           'mtime'  1621629506
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe Infantiles 07 loc eur spain;set pl mor
                                      'tag_artist'  [unknown]
                                     'tag_release'  Canciones infantiles Vernel
                                       'tag_title'  David
                                             'bpm'  143.314
                                    'search_title'  'david':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'canciones':1 'infantiles':2 'vernel':3
                                     'search_rest'  '00mid':1 'eur':6 'europe':3 'infantiles':4 'loc':5 'mor':12 'north':2 'pl':11 'set':8,10 'spain':7,9
                                    'search_combo'  '00mid':7 'canciones':4C 'david':1A 'eur':12 'europe':9 'infantiles':5C,10 'loc':11 'mor':18 'north':8 'pl':17 'set':14,16 'spain':13,15 'unknown':2B,3B 'vernel':6C
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1988
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629506.097797  (2021-05-21 22:38:26)
                             'size'  4049783