======================== unified (from filesystem) ========================
                                         'bitrate'  '174.866'
                                        'duration'  '163'
                                          'artist'  'shu-de'
                                     'text_people'  ''
                                         'release'  'voices from the distant steppe'
                                           'title'  'buura'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['world', 'tuva', 'throat singing', 'folk', 'tuvan']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'loc-asia;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '137.852'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            'done'
'COMM:Songs-DB_Custom1:XXX'                         'done'
'COMM:Songs-DB_Custom2:XXX'                         'lars'
'TALB' (Album/Movie/Show title)                     'voices from the distant steppe'
'TBPM' (BPM (beats per minute))                     '137.852'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'buura'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'shu-de'
'TPE2' (Band/orchestra/accompaniment)               'shu-de'
'TRCK' (Track number/Position in set)               '4'
'TXXX:DATE'                                         '1994'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['world', 'tuva', 'throat singing', 'folk', 'tuvan']
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+3.72 dB'
'TXXX:replaygain_track_peak'                        '0.890318'

========================== row from database ==========================
                                              'id'  1397007
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/shu-de - 1994 - voices from the distant steppe/04 - buura.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  163
                                           'genre'  loc-asia;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3590016
                                           'mtime'  1621489168
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 1994 04 loc asia;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  shu-de
                                     'tag_release'  voices from the distant steppe
                                       'tag_title'  buura
                                             'bpm'  137.852
                                    'search_title'  'buura':1
                                   'search_artist'  'de':2 'shu':1 'shude':3
                                  'search_release'  'distant':4 'from':2 'steppe':5 'the':3 'voices':1
                                     'search_rest'  '00asia':1 '1994':2 'asia':4,6 'loc':3 'mor':13 'pl':8 'set':5,7,10,12 'shirleyspinoza':9,11
                                    'search_combo'  '00asia':10 '1994':11 'asia':13,15 'buura':1A 'de':3B 'distant':8C 'from':6C 'loc':12 'mor':22 'pl':17 'set':14,16,19,21 'shirleyspinoza':18,20 'shu':2B 'shude':4B 'steppe':9C 'the':7C 'voices':5C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['world', 'tuva', 'throat singing', 'folk', 'tuvan']
                                        'tag_date'  1994
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621489167.9654748  (2021-05-20 07:39:27)
                             'size'  3590016