======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '512'
                                          'artist'  'The Who'
                                     'text_people'  ''
                                         'release'  'The Ultimate Collection'
                                           'title'  "Won't Get Fooled Again"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
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 "'q-chart-4', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['hard rock', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '23'
                                      'tracktotal'  '23'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '135'
                                             'key'  '10B'
                                        'acoustid'  '0bf7843c-6fd5-405a-b157-c3e53f1a86de'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Ultimate Collection'
'TBPM' (BPM (beats per minute))                     '135'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         "Won't Get Fooled Again"
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Who'
'TPE2' (Band/orchestra/accompaniment)               'The Who'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Universal Music TV'
'TRCK' (Track number/Position in set)               '23/23'
'TSO2'                                              'Who, The'
'TSOP' (Performer sort order)                       'Who, The'
'TSRC' (ISRC (international standard recording code))  'GBA137100090/GBAKW7100100/GBAKW7100121'
'TXXX:ASIN'                                         'B00006NSCK'
'TXXX:Acoustid Id'                                  '0bf7843c-6fd5-405a-b157-c3e53f1a86de'
'TXXX:Artists'                                      'The Who'
'TXXX:BARCODE'                                      '044006523422'
'TXXX:CATALOGNUMBER'                                '065 234-2'
'TXXX:MusicBrainz Album Artist Id'                  '9fdaa16b-a6c4-4831-b87c-bc9ca8ce7eaa'
'TXXX:MusicBrainz Album Id'                         'd44d0a1a-eadf-4a00-a4c6-4e6e2e003128'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '9fdaa16b-a6c4-4831-b87c-bc9ca8ce7eaa'
'TXXX:MusicBrainz Release Group Id'                 '2dd77597-2fc8-3965-bef0-e4bf5500012d'
'TXXX:MusicBrainz Release Track Id'                 '7571c2b9-a723-36aa-ac54-3dc553a5d9fe'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'classic rock']
'TXXX:lastfmtags'                                   ['hard rock', 'rock', '60s', 'british', 'classic rock']
'TXXX:originalyear'                                 '2002'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.03 dB'
'TXXX:replaygain_track_peak'                        '0.301701'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'2e42a0da-277e-4d69-a483-2db2f6a81869')

========================== row from database ==========================
                                              'id'  1518156
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Who/The Ultimate Collection/02 - Won_t Get Fooled Again.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  512
                                           'genre'  rock-cppex-classic
                                        'filesize'  12389700
                                           'mtime'  1636038974
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 02 Won_t rock cppex classic
                                      'tag_artist'  The Who
                                     'tag_release'  The Ultimate Collection
                                       'tag_title'  Won't Get Fooled Again
                                             'bpm'  135.0
                                    'search_title'  'again':6 'fooled':5 'get':4 't':2 'won':1 'wont':3
                                   'search_artist'  'the':1 'who':2
                                  'search_release'  'collection':3 'the':1 'ultimate':2
                                     'search_rest'  'classic':6 'classicprogpsy':1 'cppex':5 'rock':4 't':3 'won':2
                                    'search_combo'  'again':6A 'classic':17 'classicprogpsy':12 'collection':11C 'cppex':16 'fooled':5A 'get':4A 'rock':15 't':2A,14 'the':7B,9C 'ultimate':10C 'who':8B 'won':1A,13 'wont':3A
                                    'tag_tracknum'  23
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  2002
                                     'discogstags'  ['rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1636038973.6987047  (2021-11-04 16:16:13)
                             'size'  12389700