======================== unified (from filesystem) ========================
                                         'bitrate'  '163.446'
                                        'duration'  '72'
                                          'artist'  'Oorzhak Khunashtaar-ool'
                                     'text_people'  ''
                                         'release'  'Deep in the Heart of Tuva'
                                           'title'  'Bolur-daa-bol, Bolbas-daa-bol'
                                           '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'  "['world', 'all', 'throat singing', 'tuva', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  '20'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'loc-russia-tuva'
                                             'bpm'  '108.413'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Deep in the Heart of Tuva'
'TBPM' (BPM (beats per minute))                     '108.413'
'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)         'Bolur-daa-bol, Bolbas-daa-bol'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Oorzhak Khunashtaar-ool'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '04/20'
'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'                                   ['world', 'all', 'throat singing', 'tuva', 'folk']
'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'                        '+2.08 dB'
'TXXX:replaygain_track_peak'                        '0.587854'

========================== row from database ==========================
                                              'id'  1397675
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Deep on the hear of Tuva/04. Oorzhak Khunashtaar-ool - Bolur-daa-bol, Bolbas-daa-bol.mp3
                                         'working'  None
                                         'bitrate'  163
                                    'duration_sec'  72
                                           'genre'  loc-russia-tuva
                                        'filesize'  1486832
                                           'mtime'  1621629133
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia on hear 04. loc russia tuva
                                      'tag_artist'  Oorzhak Khunashtaar-ool
                                     'tag_release'  Deep in the Heart of Tuva
                                       'tag_title'  Bolur-daa-bol, Bolbas-daa-bol
                                             'bpm'  108.413
                                    'search_title'  'bol':3,7 'bolbas':5 'bolbasdaabol':8 'bolur':1 'bolurdaabol':4 'daa':2,6
                                   'search_artist'  'khunashtaar':2 'khunashtaarool':4 'ool':3 'oorzhak':1
                                  'search_release'  'deep':1 'heart':4 'in':2 'of':5 'the':3 'tuva':6
                                     'search_rest'  '00asia':1 '04':4,5 'hear':3 'loc':6 'on':2 'russia':7 'tuva':8
                                    'search_combo'  '00asia':19 '04':22,23 'bol':3A,7A 'bolbas':5A 'bolbasdaabol':8A 'bolur':1A 'bolurdaabol':4A 'daa':2A,6A 'deep':13C 'hear':21 'heart':16C 'in':14C 'khunashtaar':10B 'khunashtaarool':12B 'loc':24 'of':17C 'on':20 'ool':11B 'oorzhak':9B 'russia':25 'the':15C 'tuva':18C,26
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3B
                                           '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'  ['world', 'all', 'throat singing', 'tuva', 'folk']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629132.5964801  (2021-05-21 22:32:12)
                             'size'  1486832