======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '110'
                                          'artist'  'Tuva'
                                     'text_people'  ''
                                         'release'  'Tuva: Voices from the Center of Asia'
                                           'title'  '30.Long Song: "Don\'t Frighten the Crane"'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-OLDST-1', "
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 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['traditional', 'world', 'throat singing', 'folk']"
                                     'discogstags'  "['pop rock', 'prog rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'loc-asia'
                                             'bpm'  '145.267'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Tuva: Voices from the Center of Asia'
'TBPM' (BPM (beats per minute))                     '145.267'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia'
'TDRC' (Recording time)                             '1990'
'TENC' (Encoded by)                                 'iTunes v1.1'
'TIT2' (Title/songname/content description)         '30.Long Song: "Don\'t Frighten the Crane"'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tuva'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Smithsonian/Folkways'
'TRCK' (Track number/Position in set)               '30'
'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:discogstags'                                  ['pop rock', 'prog rock', 'rock']
'TXXX:lastfmtags'                                   ['traditional', 'world', 'throat singing', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                        '+2.33 dB'
'TXXX:replaygain_track_peak'                        '0.464014'

========================== row from database ==========================
                                              'id'  1517165
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Tuva： Voices From the Center of Asia (Smithsonian Folkways, 1990) [192k]/30 Long Song- __Don_t Frighten the Crane__.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  110
                                           'genre'  loc-asia
                                        'filesize'  2642536
                                           'mtime'  1652397845
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Tuva： From (Smithsonian Folkways, 1990) [192k] __Don_t Crane__ loc asia
                                      'tag_artist'  Tuva
                                     'tag_release'  Tuva: Voices from the Center of Asia
                                       'tag_title'  30.Long Song: "Don't Frighten the Crane"
                                             'bpm'  145.267
                                    'search_title'  '30':1 '30long':3 'crane':11 'don':6 'dont':8 'frighten':9 'long':2 'song':4,5 't':7 'the':10
                                   'search_artist'  'tuva':1
                                  'search_release'  'asia':8 'center':6 'from':4 'of':7 'the':5 'tuva':1,2 'voices':3
                                     'search_rest'  '1':4,5,6 '192k':18,19 '1990':16,17 'asia':24 'crane':22 'don':20 'folkways':14,15 'from':11 'loc':23 'smithsonian':12,13 't':21 'trad':7 'tuva':8,9,10 'va':1,2 'world':3
                                    'search_combo'  '1':24,25,26 '192k':38,39 '1990':36,37 '30':1A '30long':3A 'asia':20C,44 'center':18C 'crane':11A,42 'don':6A,40 'dont':8A 'folkways':34,35 'frighten':9A 'from':16C,31 'loc':43 'long':2A 'of':19C 'smithsonian':32,33 'song':4A,5A 't':7A,41 'the':10A,17C 'trad':27 'tuva':12B,13C,14C,28,29,30 'va':21,22 'voices':15C 'world':23
                                    'tag_tracknum'  30
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-OLDST-1', 'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-2', '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'  ['traditional', 'world', 'throat singing', 'folk']
                                        'tag_date'  1990
                                     'discogstags'  ['pop rock', 'prog rock', 'rock']

============================== file details ==============================
                                           'mtime'  1652397844.8641498  (2022-05-13 01:24:04)
                             'size'  2642536