======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '190'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Let It Be'
                                           'title'  'Get Back'
                                           '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-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '12'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '123'
                                             'key'  '10B'
                                        'acoustid'  'e4434595-2a2e-4953-a638-705acab3bafa'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Let It Be'
'TBPM' (BPM (beats per minute))                     '123'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1970'
'TDRC' (Recording time)                             '1970-11-06'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Phil Spector']])
'TIT2' (Title/songname/content description)         'Get Back'
'TKEY' (Initial key)                                '10B'
'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)               '12/12'
'TSO2'                                              'Beatles, The'
'TSOP' (Performer sort order)                       'Beatles, The'
'TSRC' (ISRC (international standard recording code))  'GBAYE0601719'
'TXXX:Acoustid Id'                                  'e4434595-2a2e-4953-a638-705acab3bafa'
'TXXX:Artists'                                      'The Beatles'
'TXXX:CATALOGNUMBER'                                'PCS 7096'
'TXXX:MusicBrainz Album Artist Id'                  'b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d'
'TXXX:MusicBrainz Album Id'                         '23f4c1d1-fd0e-3d56-ad43-4672e462e9fb'
'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'                 'bff544a7-56e0-3ed6-9e0f-3b676cca9111'
'TXXX:MusicBrainz Release Track Id'                 'd9ac35c8-e760-3e4b-a106-915459fd1ea6'
'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 rock']
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:originalyear'                                 '1970'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.32 dB'
'TXXX:replaygain_track_peak'                        '0.464019'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a52c2553-1670-4262-9193-6ecd6713741a')
'USLT::XXX'                                         ('Jo-Jo was a man who thought he was a loner,\n'
 "But he knew it couldn't last.\n"
 '\n'
 'Jo-Jo left his home in Tucson, Arizona,\n'
 'For some California grass.\n'
 '\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 '\n'
 'Get back, Jo-Jo.\n'
 '\n'
 'Go home.\n'
 '\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 '\n'
 'Get back, Jo.\n'
 '\n'
 'Sweet Loretta Martin thought she was a woman,\n'
 'But she was another man.\n'
 '\n'
 "All the girls around her say she's got it comin',\n"
 'But she gets it while she can.\n'
 '\n'
 'Oh, get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 '\n'
 'Get back, Loretta.\n'
 'Go home\n'
 '\n'
 'Oh, get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 '\n'
 'Ooh.\n'
 'Get back, Loretta.\n'
 "Your mommy's waiting for you\n"
 'Wearing her high-heeled shoes\n'
 'And a low-neck sweater.\n'
 'Get back home, Loretta.\n'
 '\n'
 'Get back.\n'
 'Get back.\n'
 'Get back to where you once belonged.\n'
 'Oh, get back.\n'
 'Get back.\n'
 'Get back.\n'
 'Oh yeah.\n'
 'Jo-Jo')

========================== row from database ==========================
                                              'id'  1524197
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_70-let it be/The Beatles - Get Back.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  190
                                           'genre'  rock-cppex-classic
                                        'filesize'  3119932
                                           'mtime'  1636039099
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _70 let it be rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  Let It Be
                                       'tag_title'  Get Back
                                             'bpm'  123.0
                                    'search_title'  'back':2 'get':1
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'be':3 'it':2 'let':1
                                     'search_rest'  '00poprockelectronic':1 '70':2 'be':5 'classic':8 'cppex':7 'it':4 'let':3 'rock':6
                                    'search_combo'  '00poprockelectronic':8 '70':9 'back':2A 'be':7C,12 'beatles':4B 'classic':15 'cppex':14 'get':1A 'it':6C,11 'let':5C,10 'rock':13 'the':3B
                                    'tag_tracknum'  12
                                      '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-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636039099.0383823  (2021-11-04 16:18:19)
                             'size'  3119932