======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '142'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Yellow Submarine'
                                           'title'  'March of the Meanies'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'stage & screen', 'soundtrack', 'pop rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '13'
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '117'
                                             'key'  '9A'
                                        'acoustid'  '65087f4b-d4b2-4b39-8260-568ea1885c4a'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TALB' (Album/Movie/Show title)                     'Yellow Submarine'
'TBPM' (BPM (beats per minute))                     '117'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1969'
'TDRC' (Recording time)                             '1969-01-17'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'George Martin']])
'TIT2' (Title/songname/content description)         'March of the Meanies'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'George Martin and His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'The Beatles'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Apple Records'
'TRCK' (Track number/Position in set)               '11/13'
'TSO2'                                              'Beatles, The'
'TSOP' (Performer sort order)                       'Martin, George and Martin, George, Orchestra'
'TSRC' (ISRC (international standard recording code))  'GBAYE0601687'
'TXXX:Acoustid Id'                                  '65087f4b-d4b2-4b39-8260-568ea1885c4a'
'TXXX:Artists'                                      'George Martin/His Orchestra'
'TXXX:CATALOGNUMBER'                                'PMC 7070'
'TXXX:MusicBrainz Album Artist Id'                  'b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d'
'TXXX:MusicBrainz Album Id'                         '98a627c2-190f-4bcc-a90c-459462dbf67b'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/soundtrack'
'TXXX:MusicBrainz Artist Id'                        '26fa8b67-6c7f-406c-ad64-a1d070092df2/61c81797-b7d3-4c01-b0d7-6b970dec450c'
'TXXX:MusicBrainz Release Group Id'                 '8d5f4b07-7e2e-4ffa-ac90-e4772c4d8525'
'TXXX:MusicBrainz Release Track Id'                 'ac36b283-efcb-3ada-b7bb-a3e71857bdcd'
'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', 'stage & screen', 'soundtrack', 'pop rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:originalyear'                                 '1969'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.27 dB'
'TXXX:replaygain_track_peak'                        '0.558828'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'470404f6-b600-4aa4-a991-a352ca44e29c')

========================== row from database ==========================
                                              'id'  1529556
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_69-yellow submarine/The Beatles - March of the Meanies.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  142
                                           'genre'  rock-cppex-classic
                                        'filesize'  2365307
                                           'mtime'  1636039088
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _69 yellow submarine rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  Yellow Submarine
                                       'tag_title'  March of the Meanies
                                             'bpm'  117.0
                                    'search_title'  'march':1 'meanies':4 'of':2 'the':3
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'submarine':2 'yellow':1
                                     'search_rest'  '00poprockelectronic':1 '69':2 'classic':7 'cppex':6 'rock':5 'submarine':4 'yellow':3
                                    'search_combo'  '00poprockelectronic':9 '69':10 'beatles':6B 'classic':15 'cppex':14 'march':1A 'meanies':4A 'of':2A 'rock':13 'submarine':8C,12 'the':3A,5B 'yellow':7C,11
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1969
                                     'discogstags'  ['rock', 'stage & screen', 'soundtrack', 'pop rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1636039088.3853562  (2021-11-04 16:18:08)
                             'size'  2365307