======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '208'
                                          'artist'  'Muhammud Rahim Takhary et al.'
                                     'text_people'  ''
                                         'release'  'The Silk Road: A Musical Caravan (disc 2: Minstrels and Lovers)'
                                           'title'  'Mizgahn-i Siyah (Black Eyelashes) (Afghan-Tajik)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-asia'
                                             'bpm'  '145.3'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Silk Road: A Musical Caravan (disc 2: Minstrels and Lovers)'
'TBPM' (BPM (beats per minute))                     '145.3'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Mizgahn-i Siyah (Black Eyelashes) (Afghan-Tajik)'
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '208069'
'TPE1' (Lead performer(s)/Soloist(s))               'Muhammud Rahim Takhary et al.'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '13'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.53 dB'
'TXXX:replaygain_track_peak'                        '0.503047'

========================== row from database ==========================
                                              'id'  728435
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Various Artists - The Silk Road - Minstrels And Lovers [Disc 2] [@320]/13 - Muhammud Rahim Takhary et al. - Mizgahn-i Siyah (Black Eyelashes) (Afghan-Tajik).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  208
                                           'genre'  loc-asia
                                        'filesize'  8323792
                                           'mtime'  1652397814
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Various Artists And [Disc 2] [@320] 13 loc asia
                                      'tag_artist'  Muhammud Rahim Takhary et al.
                                     'tag_release'  The Silk Road: A Musical Caravan (disc 2: Minstrels and Lovers)
                                       'tag_title'  Mizgahn-i Siyah (Black Eyelashes) (Afghan-Tajik)
                                             'bpm'  145.3
                                    'search_title'  'afghan':9 'afghantajik':11 'black':5,6 'eyelashes':7,8 'i':2 'mizgahn':1 'mizgahni':3 'siyah':4 'tajik':10
                                   'search_artist'  'al':5,6 'et':4 'muhammud':1 'rahim':2 'takhary':3
                                  'search_release'  '2':10,11 'a':5 'and':13 'caravan':7 'disc':8,9 'lovers':14,15 'minstrels':12 'musical':6 'road':3,4 'silk':2 'the':1
                                     'search_rest'  '2':6,7 '320':8,9 'and':3 'artists':2 'asia':11 'disc':4,5 'loc':10 'various':1
                                    'search_combo'  '2':27C,28C,38,39 '320':40,41 'a':22C 'afghan':9A 'afghantajik':11A 'al':16B,17B 'and':30C,35 'artists':34 'asia':43 'black':5A,6A 'caravan':24C 'disc':25C,26C,36,37 'et':15B 'eyelashes':7A,8A 'i':2A 'loc':42 'lovers':31C,32C 'minstrels':29C 'mizgahn':1A 'mizgahni':3A 'muhammud':12B 'musical':23C 'rahim':13B 'road':20C,21C 'silk':19C 'siyah':4A 'tajik':10A 'takhary':14B 'the':18C 'various':33
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']
                                      'lastfmtags'  []
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1652397813.5255396  (2022-05-13 01:23:33)
                             'size'  8323792