======================== unified (from filesystem) ========================
                                         'bitrate'  '141.4'
                                        'duration'  '244'
                                          'artist'  'Khongorzul & Baterdene'
                                     'text_people'  'Traditional'
                                         'release'  'The Silk Road: A Musical Caravan'
                                           'title'  'The River Herlen (Mongolian)'
                                           '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-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  '24'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-m-unsorted'
                                             'bpm'  '142.608'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Silk Road: A Musical Caravan'
'TBPM' (BPM (beats per minute))                     '142.608'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Traditional'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'The River Herlen (Mongolian)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Khongorzul & Baterdene'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/2'
'TRCK' (Track number/Position in set)               '18/24'
'TXXX:PERFORMER'                                    ('Khongorzul (vocal), Baterdene (morin khuur), (Joel Gordon, Ted Levin, '
 'Ulaanbaatar, Mongolia, 2000)')
'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'                              '24+35871D553343029DA4C835FA10D93DDB+2034098'
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.80 dB'
'TXXX:replaygain_track_peak'                        '0.413670'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1399536
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/disc 1/18. Khongorzul & Baterdene - The River Herlen (Mongolian).mp3
                                         'working'  None
                                         'bitrate'  141
                                    'duration_sec'  244
                                           'genre'  loc-m-unsorted
                                        'filesize'  4319378
                                           'mtime'  1621627085
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east disc 1 18. loc m unsorted
                                      'tag_artist'  Khongorzul & Baterdene
                                     'tag_release'  The Silk Road: A Musical Caravan
                                       'tag_title'  The River Herlen (Mongolian)
                                             'bpm'  142.608
                                    'search_title'  'herlen':3 'mongolian':4,5 'river':2 'the':1
                                   'search_artist'  'baterdene':2 'khongorzul':1
                                  'search_release'  'a':5 'caravan':7 'musical':6 'road':3,4 'silk':2 'the':1
                                     'search_rest'  '00south':1 '1':6 '18':7,8 'disc':5 'east':4 'europe':2 'loc':9 'm':10 'middle':3 'unsorted':11
                                    'search_combo'  '00south':15 '1':20 '18':21,22 'a':12C 'baterdene':7B 'caravan':14C 'disc':19 'east':18 'europe':16 'herlen':3A 'khongorzul':6B 'loc':23 'm':24 'middle':17 'mongolian':4A,5A 'musical':13C 'river':2A 'road':10C,11C 'silk':9C 'the':1A,8C 'unsorted':25
                                    'tag_tracknum'  18
                                      'num_images'  0
                                             'key'  6A
                                           '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627084.7857203  (2021-05-21 21:58:04)
                             'size'  4319378