======================== unified (from filesystem) ========================
                                         'bitrate'  '278.188'
                                        'duration'  '181'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Cambodian Cassette Archives: Khmer Folk and Pop Music, Volume 1'
                                           'title'  '[unknown]'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', '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'  '15'
                                      'tracktotal'  '20'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'loc-asia-cambodia'
                                             'bpm'  '147'
                                             'key'  '8A'
                                        'acoustid'  '469653d2-007b-4959-8394-5b53905be8b7'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Cambodian Cassette Archives: Khmer Folk and Pop Music, Volume 1'
'TBPM' (BPM (beats per minute))                     '147'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-cambodia'
'TDOR' (Original release time)                      '2004'
'TDRC' (Recording time)                             '2004-07-13'
'TIT2' (Title/songname/content description)         '[unknown]'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Sublime Frequencies'
'TRCK' (Track number/Position in set)               '15/20'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       '[unknown]'
'TXXX:ASIN'                                         'B0002IQLA8'
'TXXX:Acoustid Id'                                  '469653d2-007b-4959-8394-5b53905be8b7'
'TXXX:Artists'                                      '[unknown]'
'TXXX:BARCODE'                                      '626776752426'
'TXXX:CATALOGNUMBER'                                'SF011'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'e5bf6a94-5b65-4655-b5ad-ee1106f26b06'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '125ec42a-7229-4250-afc5-e057484327fe'
'TXXX:MusicBrainz Release Group Id'                 '154db1bd-7bdf-3c73-ae18-5cec2a570f7d'
'TXXX:MusicBrainz Release Track Id'                 '7c861cff-962d-3640-9e27-f60abd214b68'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '2004'
'TXXX:q-bass'                                       '4'
'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'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.16 dB'
'TXXX:replaygain_track_peak'                        '0.425315'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'66ea3887-180f-416c-98f4-087916e5b5a1')

========================== row from database ==========================
                                              'id'  928380
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Cambodian Cassette Archives - khmer folk & pop music vol.1/15 - Unknown - Unknown.mp3
                                         'working'  None
                                         'bitrate'  278
                                    'duration_sec'  181
                                           'genre'  loc-asia-cambodia
                                        'filesize'  6378783
                                           'mtime'  1621629127
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia khmer folk & pop music vol.1 15 Unknown Unknown loc asia cambodia
                                      'tag_artist'  [unknown]
                                     'tag_release'  Cambodian Cassette Archives: Khmer Folk and Pop Music, Volume 1
                                       'tag_title'  [unknown]
                                             'bpm'  147.0
                                    'search_title'  'unknown':1,2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '1':12 'and':7 'archives':3,4 'cambodian':1 'cassette':2 'folk':6 'khmer':5 'music':9,10 'pop':8 'volume':11
                                     'search_rest'  '00asia':1 '1':7 'asia':11 'cambodia':12 'folk':3 'khmer':2 'loc':10 'music':5 'pop':4 'unknown':9 'vol':6 'vol1':8
                                    'search_combo'  '00asia':17 '1':16C,23 'and':11C 'archives':7C,8C 'asia':27 'cambodia':28 'cambodian':5C 'cassette':6C 'folk':10C,19 'khmer':9C,18 'loc':26 'music':13C,14C,21 'pop':12C,20 'unknown':1A,2A,3B,4B,25 'vol':22 'vol1':24 'volume':15C
                                    'tag_tracknum'  15
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629127.43002  (2021-05-21 22:32:07)
                             'size'  6378783