======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '172'
                                          'artist'  'Ferry Duo'
                                     'text_people'  ''
                                         'release'  'Hò! #1 Roady Music From Vietnam 2000'
                                           'title'  "FNL's Blues"
                                           '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-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '21'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'loc-asia-vietnam;set-pl-mor'
                                             'bpm'  '132.2'
                                             'key'  '3A'
                                        'acoustid'  'bedd8207-88b9-42a5-aeb5-54001d11466a'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hò! #1 Roady Music From Vietnam 2000'
'TBPM' (BPM (beats per minute))                     '132.2'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-vietnam', 'set-pl-mor']
'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998'
'TENC' (Encoded by)                                 'meaty <meaty@hotbox.ru>'
'TIT2' (Title/songname/content description)         "FNL's Blues"
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Ferry Duo'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Trikont'
'TRCK' (Track number/Position in set)               '15/21'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Ferry Duo'
'TXXX:Acoustid Id'                                  'bedd8207-88b9-42a5-aeb5-54001d11466a'
'TXXX:BARCODE'                                      '4015698024920'
'TXXX:CATALOGNUMBER'                                'US-254168'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '0fbf043c-36e8-4781-864c-d74f401b463a'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'e613eabe-61f7-4af4-b3b8-313c11a7af71'
'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:SCRIPT'                                       'Latn'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.22 dB'
'TXXX:replaygain_track_peak'                        '0.400755'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'96b0b762-480c-489e-9cf4-d334e7d06983')

========================== row from database ==========================
                                              'id'  1516607
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Roady Music From Vietnam 2000/15-FNL_s Blues.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  172
                                           'genre'  loc-asia-vietnam;set-pl-mor
                                        'filesize'  5516600
                                           'mtime'  1621626202
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 15 FNL_s loc asia vietnam;set pl mor
                                      'tag_artist'  Ferry Duo
                                     'tag_release'  Hò! #1 Roady Music From Vietnam 2000
                                       'tag_title'  FNL's Blues
                                             'bpm'  132.2
                                    'search_title'  'blues':4 'fnl':1 'fnls':3 's':2
                                   'search_artist'  'duo':2 'ferry':1
                                  'search_release'  '1':3,4 '2000':9 'from':7 'ho':1,2 'music':6 'roady':5 'vietnam':8
                                     'search_rest'  'asia':4 'fnl':1 'loc':3 'mor':10 'pl':9 's':2 'set':6,8 'vietnam':5,7
                                    'search_combo'  '1':9C,10C '2000':15C 'asia':19 'blues':4A 'duo':6B 'ferry':5B 'fnl':1A,16 'fnls':3A 'from':13C 'ho':7C,8C 'loc':18 'mor':25 'music':12C 'pl':24 'roady':11C 's':2A,17 'set':21,23 'vietnam':14C,20,22
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626202.0990026  (2021-05-21 21:43:22)
                             'size'  5516600