======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '291'
                                          'artist'  'Nirvana'
                                     'text_people'  ''
                                         'release'  'In Utero'
                                           'title'  'Radio Friendly Unit Shifter'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', '90s', 'alternative', 'grunge', 'rock']"
                                     'discogstags'  "['rock', 'grunge']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '12'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '155'
                                             'key'  '6B'
                                        'acoustid'  '54212b80-884d-4e4f-a039-fbbc2198148e'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'In Utero'
'TBPM' (BPM (beats per minute))                     '155'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Radio Friendly Unit Shifter'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '291160'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Nirvana'
'TPE2' (Band/orchestra/accompaniment)               'Nirvana'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Geffen Records/Sub Pop Records'
'TRCK' (Track number/Position in set)               '10/12'
'TSO2'                                              'Nirvana'
'TSOP' (Performer sort order)                       'Nirvana'
'TSRC' (ISRC (international standard recording code))  'USGF19960710'
'TXXX:Acoustid Id'                                  '54212b80-884d-4e4f-a039-fbbc2198148e'
'TXXX:Artists'                                      'Nirvana'
'TXXX:BARCODE'                                      '720642453629'
'TXXX:CATALOGNUMBER'                                'GED 24536'
'TXXX:MusicBrainz Album Artist Id'                  '5b11f4ce-a62d-471e-81fc-a69a8278c7da'
'TXXX:MusicBrainz Album Id'                         '80189394-8ca0-4a97-9d0e-aad32725de22'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5b11f4ce-a62d-471e-81fc-a69a8278c7da'
'TXXX:MusicBrainz Release Group Id'                 '2a0981fb-9593-3019-864b-ce934d97a16e'
'TXXX:MusicBrainz Release Track Id'                 'bbb6c9c2-f019-43a4-8b83-862b7928a33f'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'grunge']
'TXXX:lastfmtags'                                   ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
'TXXX:originalyear'                                 '1993'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.17 dB'
'TXXX:replaygain_track_peak'                        '0.659460'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'04e67fe5-c2eb-438a-9323-99e6f4773116')

========================== row from database ==========================
                                              'id'  1351233
                                            'path'  /data/Music/Bulk/00poprockelectronic/Nirvana/In Utero/Nirvana - Radio Friendly Unit Shifter - 10.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  291
                                           'genre'  rock-gr-grunge
                                        'filesize'  4702468
                                           'mtime'  1636902941
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 10 rock gr grunge
                                      'tag_artist'  Nirvana
                                     'tag_release'  In Utero
                                       'tag_title'  Radio Friendly Unit Shifter
                                             'bpm'  155.0
                                    'search_title'  'friendly':2 'radio':1 'shifter':4 'unit':3
                                   'search_artist'  'nirvana':1
                                  'search_release'  'in':1 'utero':2
                                     'search_rest'  '00poprockelectronic':1 'gr':3 'grunge':4 'rock':2
                                    'search_combo'  '00poprockelectronic':8 'friendly':2A 'gr':10 'grunge':11 'in':6C 'nirvana':5B 'radio':1A 'rock':9 'shifter':4A 'unit':3A 'utero':7C
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
                                        'tag_date'  1993
                                     'discogstags'  ['rock', 'grunge']

============================== file details ==============================
                                           'mtime'  1636902940.893502  (2021-11-14 16:15:40)
                             'size'  4702468