======================== unified (from filesystem) ========================
                                         'bitrate'  '218.112'
                                        'duration'  '164'
                                          'artist'  'La Nina de los Peines'
                                     'text_people'  ''
                                         'release'  'String Of Pearls: Jewels Of The 78rpm Era 1918-1951'
                                           'title'  'Saeta: Pilatos Por No Dejar'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['flamenco', 'spanish', 'female vocalists', 'spain']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1930'
                                        'comments'  ''
                                           'genre'  'loc-style-flamenco'
                                             'bpm'  '118.567'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'String Of Pearls: Jewels Of The 78rpm Era 1918-1951'
'TBPM' (BPM (beats per minute))                     '118.567'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-flamenco'
'TDRC' (Recording time)                             '1930'
'TIT2' (Title/songname/content description)         'Saeta: Pilatos Por No Dejar'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'La Nina de los Peines'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              'Mississippi Records  [MR-041-1]  LP'
'TRCK' (Track number/Position in set)               '6'
'TXXX:MUTANGIBLE'                                   'http://holywarbles.blogspot.com'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['flamenco', 'spanish', 'female vocalists', 'spain']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.74 dB'
'TXXX:replaygain_track_peak'                        '0.654772'

========================== row from database ==========================
                                              'id'  761464
                                            'path'  /data/Music/Bulk/00localcharacter/VA - String Of Pearls - Jewels Of The 78rpm Era [1918-1951]/06 - la nina de los peines - saeta pilatos por no dejar.mp3
                                         'working'  None
                                         'bitrate'  218
                                    'duration_sec'  164
                                           'genre'  loc-style-flamenco
                                        'filesize'  4503170
                                           'mtime'  1620586247
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA [1918 1951] 06 nina peines saeta pilatos por no dejar loc style flamenco
                                      'tag_artist'  La Nina de los Peines
                                     'tag_release'  String Of Pearls: Jewels Of The 78rpm Era 1918-1951
                                       'tag_title'  Saeta: Pilatos Por No Dejar
                                             'bpm'  118.567
                                    'search_title'  'dejar':6 'no':5 'pilatos':3 'por':4 'saeta':1,2
                                   'search_artist'  'de':3 'la':1 'los':4 'nina':2 'peines':5
                                  'search_release'  '1918':9 '19181951':11 '1951':10 '78rpm':7 'era':8 'jewels':5 'of':2 'pearls':3,4 'string':1 'the':6
                                     'search_rest'  '1918':2,3 '1951':4,5 'dejar':12 'flamenco':15 'loc':13 'nina':6 'no':11 'peines':7 'pilatos':9 'por':10 'saeta':8 'style':14 'va':1
                                    'search_combo'  '1918':20C,24,25 '19181951':22C '1951':21C,26,27 '78rpm':18C 'de':9B 'dejar':6A,34 'era':19C 'flamenco':37 'jewels':16C 'la':7B 'loc':35 'los':10B 'nina':8B,28 'no':5A,33 'of':13C 'pearls':14C,15C 'peines':11B,29 'pilatos':3A,31 'por':4A,32 'saeta':1A,2A,30 'string':12C 'style':36 'the':17C 'va':23
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['flamenco', 'spanish', 'female vocalists', 'spain']
                                        'tag_date'  1930
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586247.1797316  (2021-05-09 20:50:47)
                             'size'  4503170