======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '167'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  "Sgt. Pepper's Lonely Hearts Club Band"
                                           'title'  'Getting Better'
                                           '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-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '13'
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '122'
                                             'key'  '8B'
                                        'acoustid'  '38c0002c-8b74-4261-b289-213ef4d97013'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "Sgt. Pepper's Lonely Hearts Club Band"
'TBPM' (BPM (beats per minute))                     '122'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1967'
'TDRC' (Recording time)                             '1967-06-01'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'George Martin'], ['engineer', 'Geoff Emerick']])
'TIT2' (Title/songname/content description)         'Getting Better'
'TKEY' (Initial key)                                '8B'
'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)                                  'Parlophone'
'TRCK' (Track number/Position in set)               '4/13'
'TSO2'                                              'Beatles, The'
'TSOP' (Performer sort order)                       'Beatles, The'
'TSRC' (ISRC (international standard recording code))  'GBAYE0601510'
'TXXX:Acoustid Id'                                  '38c0002c-8b74-4261-b289-213ef4d97013'
'TXXX:Artists'                                      'The Beatles'
'TXXX:CATALOGNUMBER'                                'PCS 7027'
'TXXX:MusicBrainz Album Artist Id'                  'b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d'
'TXXX:MusicBrainz Album Id'                         'aa86fb96-d1cc-3ce9-b916-166e9a689f22'
'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'                 '9f7a4c28-8fa2-3113-929c-c47a9f7982c3'
'TXXX:MusicBrainz Release Track Id'                 'a519fb5b-a360-3241-9ea0-b91c25aabf8b'
'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', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:originalyear'                                 '1967'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'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'                        '+0.14 dB'
'TXXX:replaygain_track_peak'                        '0.660178'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'09cc4a63-7b90-4fda-aec4-b3d34cea4fdc')
'USLT::XXX'                                         ("It's getting better all the time \r\n"
 'I used to get mad at my school \r\n'
 "The teacher's that taught me weren't cool \r\n"
 "You're holding me down \r\n"
 'Filling me up with your rules \r\n'
 '\r\n'
 "I've got to admit it's getting better \r\n"
 'A little better all the time \r\n'
 "I have to admit it's getting better \r\n"
 "It's getting better since you've been mine \r\n"
 '\r\n'
 'Me used to be angry young man \r\n'
 'Me hiding me head in the sand \r\n'
 'You gave me the word \r\n'
 'I finally heard \r\n'
 "I'm doing the best that I can \r\n"
 "I've got to admit it's getting better \r\n"
 '\r\n'
 'I used to be cruel to my woman \r\n'
 'I beat her and kept apart from the things that she loved \r\n'
 "Man I was mean but I'm changing my scene \r\n"
 "And I'm doing the best that I can \r\n"
 '\r\n'
 "I admit it's getting better \r\n"
 'A little better all the time \r\n'
 "Yes I admit it's getting better \r\n"
 "It's getting better since you've been mine...")

========================== row from database ==========================
                                              'id'  1525429
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_67-sgt. pepper_s lonely hearts club band/The Beatles - Getting Better.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  167
                                           'genre'  rock-cppex-classic
                                        'filesize'  2781903
                                           'mtime'  1636039066
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _67 sgt. pepper_s lonely hearts club band rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  Sgt. Pepper's Lonely Hearts Club Band
                                       'tag_title'  Getting Better
                                             'bpm'  122.0
                                    'search_title'  'better':2 'getting':1
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'band':9 'club':8 'hearts':7 'lonely':6 'pepper':3 'peppers':5 's':4 'sgt':1,2
                                     'search_rest'  '00poprockelectronic':1 '67':2 'band':10 'classic':13 'club':9 'cppex':12 'hearts':8 'lonely':7 'pepper':5 'rock':11 's':6 'sgt':3,4
                                    'search_combo'  '00poprockelectronic':14 '67':15 'band':13C,23 'beatles':4B 'better':2A 'classic':26 'club':12C,22 'cppex':25 'getting':1A 'hearts':11C,21 'lonely':10C,20 'pepper':7C,18 'peppers':9C 'rock':24 's':8C,19 'sgt':5C,6C,16,17 'the':3B
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8B
                                           '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-2', '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'  1967
                                     'discogstags'  ['rock', 'pop rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1636039066.4339569  (2021-11-04 16:17:46)
                             'size'  2781903