======================== unified (from filesystem) ========================
                                         'bitrate'  '135.563'
                                        'duration'  '79'
                                          'artist'  'Kelek Kumaqay-olu'
                                     'text_people'  'Traditional'
                                         'release'  'The Silk Road: A Musical Caravan'
                                           'title'  'Tepen Kvk (Kazakh from Mongolia)'
                                           '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-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['central asia']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '23'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-m-unsorted'
                                             'bpm'  '120.256'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Silk Road: A Musical Caravan'
'TBPM' (BPM (beats per minute))                     '120.256'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Traditional'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Tepen Kvk (Kazakh from Mongolia)'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kelek Kumaqay-olu'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '3/23'
'TXXX:PERFORMER'                                    'Kelek Kumaqay-olu (sybyzghy), (Almay, Kazakhstan, 1999)'
'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'                                   'central asia'
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.339165'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1395790
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/disc 2/03. Kelek Kumaqay-olu - Tepen Kok (Kazakh from Mongolia).mp3
                                         'working'  None
                                         'bitrate'  135
                                    'duration_sec'  79
                                           'genre'  loc-m-unsorted
                                        'filesize'  1349734
                                           'mtime'  1621627089
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east disc 2 03. Kok loc unsorted
                                      'tag_artist'  Kelek Kumaqay-olu
                                     'tag_release'  The Silk Road: A Musical Caravan
                                       'tag_title'  Tepen Kvk (Kazakh from Mongolia)
                                             'bpm'  120.256
                                    'search_title'  'from':5 'kazakh':3,4 'kvk':2 'mongolia':6,7 'tepen':1
                                   'search_artist'  'kelek':1 'kumaqay':2 'kumaqayolu':4 'olu':3
                                  'search_release'  'a':5 'caravan':7 'musical':6 'road':3,4 'silk':2 'the':1
                                     'search_rest'  '00south':1 '03':7,8 '2':6 'disc':5 'east':4 'europe':2 'kok':9 'loc':10 'middle':3 'unsorted':11
                                    'search_combo'  '00south':19 '03':25,26 '2':24 'a':16C 'caravan':18C 'disc':23 'east':22 'europe':20 'from':5A 'kazakh':3A,4A 'kelek':8B 'kok':27 'kumaqay':9B 'kumaqayolu':11B 'kvk':2A 'loc':28 'middle':21 'mongolia':6A,7A 'musical':17C 'olu':10B 'road':14C,15C 'silk':13C 'tepen':1A 'the':12C 'unsorted':29
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['central asia']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627089.4321327  (2021-05-21 21:58:09)
                             'size'  1349734