======================== unified (from filesystem) ========================
                                         'bitrate'  '160.035'
                                        'duration'  '169'
                                          'artist'  'Sirajoddin Juraev'
                                     'text_people'  'Traditional'
                                         'release'  'The Silk Road: A Musical Caravan'
                                           'title'  'Mashq-e Javanan (Tajik/Uzbek)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['tajik', 'uzbek', 'central asian', 'central asia', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '23'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-m-unsorted'
                                             'bpm'  '117.877'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Silk Road: A Musical Caravan'
'TBPM' (BPM (beats per minute))                     '117.877'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Traditional'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Mashq-e Javanan (Tajik/Uzbek)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sirajoddin Juraev'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '9/23'
'TXXX:PERFORMER'                                    'Sirajoddin Juraev (dutar), (J. During, Khojand, Tajikistan, 2001)'
'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:iTunes_CDDB_IDs'                              '23+922B65FD284D2423EC4A1E35F34183D3+2045760'
'TXXX:lastfmtags'                                   ['tajik', 'uzbek', 'central asian', 'central asia', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.14 dB'
'TXXX:replaygain_track_peak'                        '0.453920'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1398942
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/disc 2/09. Sirajoddin Juraev - Mashq-e Javanan (Tajik-Uzbek).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  loc-m-unsorted
                                        'filesize'  3398299
                                           'mtime'  1621627090
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east disc 2 09. loc m unsorted
                                      'tag_artist'  Sirajoddin Juraev
                                     'tag_release'  The Silk Road: A Musical Caravan
                                       'tag_title'  Mashq-e Javanan (Tajik/Uzbek)
                                             'bpm'  117.877
                                    'search_title'  'e':2 'javanan':4 'mashq':1 'mashqe':3 'tajik':5 'tajikuzbek':7 'uzbek':6
                                   'search_artist'  'juraev':2 'sirajoddin':1
                                  'search_release'  'a':5 'caravan':7 'musical':6 'road':3,4 'silk':2 'the':1
                                     'search_rest'  '00south':1 '09':7,8 '2':6 'disc':5 'east':4 'europe':2 'loc':9 'm':10 'middle':3 'unsorted':11
                                    'search_combo'  '00south':17 '09':23,24 '2':22 'a':14C 'caravan':16C 'disc':21 'e':2A 'east':20 'europe':18 'javanan':4A 'juraev':9B 'loc':25 'm':26 'mashq':1A 'mashqe':3A 'middle':19 'musical':15C 'road':12C,13C 'silk':11C 'sirajoddin':8B 'tajik':5A 'tajikuzbek':7A 'the':10C 'unsorted':27 'uzbek':6A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['tajik', 'uzbek', 'central asian', 'central asia', 'folk']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627089.536576  (2021-05-21 21:58:09)
                             'size'  3398299