======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '227'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Let It Be'
                                           'title'  'Across the Universe'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '12'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '153'
                                             'key'  '4A'
                                        'acoustid'  '362ae791-ceab-41c5-a86e-e64c3a2135d2'
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))                     '153'
'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)         'Across the Universe'
'TKEY' (Initial key)                                '4A'
'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)               '3/12'
'TSO2'                                              'Beatles, The'
'TSOP' (Performer sort order)                       'Beatles, The'
'TSRC' (ISRC (international standard recording code))  'GBAYE0601710'
'TXXX:Acoustid Id'                                  '362ae791-ceab-41c5-a86e-e64c3a2135d2'
'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'                 'b899dd79-d374-33bf-a1ce-9bebd76831e6'
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.550326'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'90aa777f-5c69-4ed6-8ef9-6a576423e6a2')
'USLT::XXX'                                         ('Words are flowing out like endless rain into a paper cup\r\n'
 'They slither wildly as they slip away across the universe\r\n'
 'Pools of sorrow, waves of joy are drifting through my opened mind\r\n'
 'Possessing and caressing me\r\n'
 '\r\n'
 'Jai Guru Deva, Om\r\n'
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 '\r\n'
 'Images of broken light which dance before me like a million eyes\r\n'
 'They call me on and on across the universe\r\n'
 'Thoughts meander like a restless wind inside a letter box\r\n'
 'They tumble blindly as they make their way across the universe\r\n'
 '\r\n'
 'Jai Guru Deva, Om\r\n'
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 '\r\n'
 'Sounds of laughter, shades of life are ringing through my opened ears\r\n'
 'Inciting and inviting me\r\n'
 'Limitless undying love which shines around me like a million suns\r\n'
 'And calls me on and on across the universe\r\n'
 '\r\n'
 'Jai Guru Deva, Om\r\n'
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 "Nothing's gonna change my world\r\n"
 'Jai Guru Deva\r\n'
 'Jai Guru Deva')

========================== row from database ==========================
                                              'id'  1529277
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_70-let it be/The Beatles - Across the Universe.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  227
                                           'genre'  rock-cppex-classic
                                        'filesize'  3703230
                                           'mtime'  1636039094
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _70 let it be rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  Let It Be
                                       'tag_title'  Across the Universe
                                             'bpm'  153.0
                                    'search_title'  'across':1 'the':2 'universe':3
                                   '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':9 '70':10 'across':1A 'be':8C,13 'beatles':5B 'classic':16 'cppex':15 'it':7C,12 'let':6C,11 'rock':14 'the':2A,4B 'universe':3A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636039093.636103  (2021-11-04 16:18:13)
                             'size'  3703230