======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '144'
                                          'artist'  'Abdul Sary And So Savoeun'
                                     'text_people'  ''
                                         'release'  'Uploads from Samouth Khmer (50s-70s Asian)'
                                           'title'  'Yerng Choub Jom Hoy Met Euy Romvong'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-UNU-3', 'Q-JZFKS-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'loc-asia-cambodia'
                                             'bpm'  '145.895'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Uploads from Samouth Khmer (50s-70s Asian)'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-cambodia'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Yerng Choub Jom Hoy Met Euy Romvong'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Abdul Sary And So Savoeun'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf55.33.100'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '3'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.354504'

========================== row from database ==========================
                                              'id'  1492907
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Uploads from Samouth Khmer (50s-70s Asian)/Abdul Sary And So Savoeun - Yerng Choub Jom Hoy Met Euy Romvong.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  144
                                           'genre'  loc-asia-cambodia
                                        'filesize'  4623839
                                           'mtime'  1621509080
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia loc asia cambodia
                                      'tag_artist'  Abdul Sary And So Savoeun
                                     'tag_release'  Uploads from Samouth Khmer (50s-70s Asian)
                                       'tag_title'  Yerng Choub Jom Hoy Met Euy Romvong
                                             'bpm'  145.895
                                    'search_title'  'choub':2 'euy':6 'hoy':4 'jom':3 'met':5 'romvong':7 'yerng':1
                                   'search_artist'  'abdul':1 'and':3 'sary':2 'savoeun':5 'so':4
                                  'search_release'  '50s':5 '50s70s':7 '70s':6 'asian':8,9 'from':2 'khmer':4 'samouth':3 'uploads':1
                                     'search_rest'  '00asia':1 'asia':3 'cambodia':4 'loc':2
                                    'search_combo'  '00asia':22 '50s':17C '50s70s':19C '70s':18C 'abdul':8B 'and':10B 'asia':24 'asian':20C,21C 'cambodia':25 'choub':2A 'euy':6A 'from':14C 'hoy':4A 'jom':3A 'khmer':16C 'loc':23 'met':5A 'romvong':7A 'samouth':15C 'sary':9B 'savoeun':12B 'so':11B 'uploads':13C 'yerng':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', '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-1']
                                      'lastfmtags'  []
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621509080.1459  (2021-05-20 13:11:20)
                             'size'  4623839