======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '66'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Abbey Road'
                                           'title'  'Mean Mr. Mustard'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-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-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '17'
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '100'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Abbey Road'
'TBPM' (BPM (beats per minute))                     '100'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1969'
'TDRC' (Recording time)                             '1969-09-26'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'George Martin']])
'TIT2' (Title/songname/content description)         'Mean Mr. Mustard'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beatles'
'TPE2' (Band/orchestra/accompaniment)               'The Beatles'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Apple Records'
'TRCK' (Track number/Position in set)               '11/17'
'TSO2'                                              'Beatles, The'
'TSOP' (Performer sort order)                       'Beatles, The'
'TSRC' (ISRC (international standard recording code))  'GBAYE0601700'
'TXXX:Artists'                                      'The Beatles'
'TXXX:CATALOGNUMBER'                                'PCS 7088'
'TXXX:MusicBrainz Album Artist Id'                  'b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d'
'TXXX:MusicBrainz Album Id'                         'd6010be3-98f8-422c-a6c9-787e2e491e58'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d'
'TXXX:MusicBrainz Release Group Id'                 '9162580e-5df4-32de-80cc-f45a8d8a9b1d'
'TXXX:MusicBrainz Release Track Id'                 '7ab529d1-b722-3f22-956c-eb57d1364535'
'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', 'pop']
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:originalyear'                                 '1969'
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.74 dB'
'TXXX:replaygain_track_peak'                        '0.536562'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'99c004fb-ba87-41be-afd4-e0157b40516a')
'USLT::XXX'                                         ('Mean Mister Mustard sleeps in the park\r\n'
 'Shaves in the dark trying to save paper\r\n'
 'Sleeps in a hole in the road\r\n'
 'Saving up to buy some clothes\r\n'
 'Keeps a ten-bob note up his nose\r\n'
 'Such a mean old man\r\n'
 'Such a mean old man\r\n'
 '\r\n'
 'His sister Pam works in a shop\r\n'
 "She never stops, she's a go-getter\r\n"
 'Takes him out to look at the queen\r\n'
 "Only place that he's ever been\r\n"
 'Always shouts out something obscene\r\n'
 'Such a dirty old man\r\n'
 'Dirty old man')

========================== row from database ==========================
                                              'id'  1529596
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_69-abbey road/The Beatles - Mean Mr. Mustard.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  66
                                           'genre'  rock-cppex-classic
                                        'filesize'  1432934
                                           'mtime'  1636039083
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _69 abbey road rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  Abbey Road
                                       'tag_title'  Mean Mr. Mustard
                                             'bpm'  100.0
                                    'search_title'  'mean':1 'mr':2,3 'mustard':4
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'abbey':1 'road':2
                                     'search_rest'  '00poprockelectronic':1 '69':2 'abbey':3 'classic':7 'cppex':6 'road':4 'rock':5
                                    'search_combo'  '00poprockelectronic':9 '69':10 'abbey':7C,11 'beatles':6B 'classic':15 'cppex':14 'mean':1A 'mr':2A,3A 'mustard':4A 'road':8C,12 'rock':13 'the':5B
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1969
                                     'discogstags'  ['rock', 'pop']

============================== file details ==============================
                                           'mtime'  1636039082.8221958  (2021-11-04 16:18:02)
                             'size'  1432934