======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '292'
                                          'artist'  'AC/DC'
                                     'text_people'  ''
                                         'release'  'The Best of AC/DC'
                                           'title'  'Thunderstruck'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'metal', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  '21'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '134'
                                             'key'  '12B'
                                        'acoustid'  'd422a17b-cf8e-423b-818a-a663f3ba216b'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Best of AC/DC'
'TBPM' (BPM (beats per minute))                     '134'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Thunderstruck'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'AC/DC'
'TPE2' (Band/orchestra/accompaniment)               'AC/DC'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '19/21'
'TSO2'                                              'AC/DC'
'TSOP' (Performer sort order)                       'AC/DC'
'TSRC' (ISRC (international standard recording code))  'AUAP09000014'
'TXXX:Acoustid Id'                                  'd422a17b-cf8e-423b-818a-a663f3ba216b'
'TXXX:Artists'                                      'AC/DC'
'TXXX:MusicBrainz Album Artist Id'                  '66c662b6-6e2f-4930-8610-912e24c63ed1'
'TXXX:MusicBrainz Album Id'                         '59eb66a5-3fed-48fd-9d19-b5df3b2036c3'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'bootleg'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '66c662b6-6e2f-4930-8610-912e24c63ed1'
'TXXX:MusicBrainz Release Group Id'                 '445520a9-5087-3a85-a293-13840c565143'
'TXXX:MusicBrainz Release Track Id'                 '0b106ef0-2f2d-34e2-bcf8-5c6973cce14e'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'metal', 'classic rock']
'TXXX:originalyear'                                 '1999'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.66 dB'
'TXXX:replaygain_track_peak'                        '0.363538'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6d19aaa7-1eb5-4488-a54d-fe07d0621a7f')

========================== row from database ==========================
                                              'id'  1410588
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/AC-DC - AC/DC - ACDC/ACDC -  The Best Of @192/ACDC - 19 - Thunderstruck.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  292
                                           'genre'  rock-cppex-classic
                                        'filesize'  7054565
                                           'mtime'  1678553466
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy ACDC ACDC Of @192 ACDC 19 rock cppex classic
                                      'tag_artist'  AC/DC
                                     'tag_release'  The Best of AC/DC
                                       'tag_title'  Thunderstruck
                                             'bpm'  134.0
                                    'search_title'  'thunderstruck':1
                                   'search_artist'  'ac':1 'acdc':3 'dc':2
                                  'search_release'  'ac':4 'acdc':6 'best':2 'dc':5 'of':3 'the':1
                                     'search_rest'  '19':5 '192':4 'acdc':2 'classic':8 'classicprogpsy':1 'cppex':7 'of':3 'rock':6
                                    'search_combo'  '19':15 '192':14 'ac':2B,8C 'acdc':4B,10C,12 'best':6C 'classic':18 'classicprogpsy':11 'cppex':17 'dc':3B,9C 'of':7C,13 'rock':16 'the':5C 'thunderstruck':1A
                                    'tag_tracknum'  19
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'metal', 'classic rock']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678553465.6334033  (2023-03-11 17:51:05)
                             'size'  7054565