======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '152'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Let It Be'
                                           'title'  'For You Blue'
                                           '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-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '12'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '129'
                                             'key'  '10B'
                                        'acoustid'  '925f2afa-8f6a-4f80-ad9b-aa3d1cbac7ee'
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))                     '129'
'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)         'For You Blue'
'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)               '11/12'
'TSO2'                                              'Beatles, The'
'TSOP' (Performer sort order)                       'Beatles, The'
'TSRC' (ISRC (international standard recording code))  'GBAYE0601718'
'TXXX:Acoustid Id'                                  '925f2afa-8f6a-4f80-ad9b-aa3d1cbac7ee'
'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'                 'a8fdbc43-7738-319a-8a84-6a8280daab48'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'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'                        '+0.98 dB'
'TXXX:replaygain_track_peak'                        '0.674693'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e3f3b880-32e7-401c-8879-9e477b1a6d73')

========================== row from database ==========================
                                              'id'  1524219
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_70-let it be/The Beatles - For you Blue.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  152
                                           'genre'  rock-cppex-classic
                                        'filesize'  2510952
                                           'mtime'  1636039099
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _70 let it be you rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  Let It Be
                                       'tag_title'  For You Blue
                                             'bpm'  129.0
                                    'search_title'  'blue':3 'for':1 'you':2
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'be':3 'it':2 'let':1
                                     'search_rest'  '00poprockelectronic':1 '70':2 'be':5 'classic':9 'cppex':8 'it':4 'let':3 'rock':7 'you':6
                                    'search_combo'  '00poprockelectronic':9 '70':10 'be':8C,13 'beatles':5B 'blue':3A 'classic':17 'cppex':16 'for':1A 'it':7C,12 'let':6C,11 'rock':15 'the':4B 'you':2A,14
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  10B
                                           '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-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636039099.0377252  (2021-11-04 16:18:19)
                             'size'  2510952