======================== unified (from filesystem) ========================
                                         'bitrate'  '183.933'
                                        'duration'  '127'
                                          'artist'  'Shaktar Shulban'
                                     'text_people'  ''
                                         'release'  'Deep in the Heart of Tuva'
                                           'title'  'Demonstration of Sygyt and Kargyraa'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', 'Q-UNU-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['throat singing', 'tuva', 'folk', 'mongolian', 'world']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  '20'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'loc-russia-tuva'
                                             'bpm'  '139.370'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Deep in the Heart of Tuva'
'TBPM' (BPM (beats per minute))                     '139.370'
'TCON' (Content type, a.k.a. Genre)                 'loc-russia-tuva'
'TDRC' (Recording time)                             '1996'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Demonstration of Sygyt and Kargyraa'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Shaktar Shulban'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '07/20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['throat singing', 'tuva', 'folk', 'mongolian', 'world']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.12 dB'
'TXXX:replaygain_track_peak'                        '0.572613'

========================== row from database ==========================
                                              'id'  1400080
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Deep on the hear of Tuva/07. Shaktar Shulban - Demonstration of Sygyt and Kargyraa.mp3
                                         'working'  None
                                         'bitrate'  184
                                    'duration_sec'  127
                                           'genre'  loc-russia-tuva
                                        'filesize'  2943469
                                           'mtime'  1621629138
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia hear 07. loc russia tuva
                                      'tag_artist'  Shaktar Shulban
                                     'tag_release'  Deep in the Heart of Tuva
                                       'tag_title'  Demonstration of Sygyt and Kargyraa
                                             'bpm'  139.37
                                    'search_title'  'and':4 'demonstration':1 'kargyraa':5 'of':2 'sygyt':3
                                   'search_artist'  'shaktar':1 'shulban':2
                                  'search_release'  'deep':1 'heart':4 'in':2 'of':5 'the':3 'tuva':6
                                     'search_rest'  '00asia':1 '07':3,4 'hear':2 'loc':5 'russia':6 'tuva':7
                                    'search_combo'  '00asia':14 '07':16,17 'and':4A 'deep':8C 'demonstration':1A 'hear':15 'heart':11C 'in':9C 'kargyraa':5A 'loc':18 'of':2A,12C 'russia':19 'shaktar':6B 'shulban':7B 'sygyt':3A 'the':10C 'tuva':13C,20
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['throat singing', 'tuva', 'folk', 'mongolian', 'world']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629137.5272348  (2021-05-21 22:32:17)
                             'size'  2943469