<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '252'
                                          'artist'  'The Sex Pistols'
                                     'text_people'  'Glen Matlock/John Lydon/Paul Cook/Steve Jones'
                                         'release'  "Never Mind the Bollocks Here's the Sex Pistols"
                                           'title'  'God Save the Queen'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['punk', 'punk rock', 'british', '70s', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '102.8'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382f1970>

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'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
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'PRIV:WM/WMCollectionID:\x98\x9d\x9b´\x7f\x10eE\x91l¬tòK\x9ek'  PRIV(owner='WM/WMCollectionID', data=b'\x98\x9d\x9b\xb4\x7f\x10eE\x91l\xact\xf2K\x9ek')
'PRIV:WM/WMContentID:)c\x9b-\x1fÀÄE½\x89\x1a\x03w!íQ'  PRIV(owner='WM/WMContentID', data=b')c\x9b-\x1f\xc0\xc4E\xbd\x89\x1a\x03w!\xedQ')
'TALB' (Album/Movie/Show title)                     "Never Mind the Bollocks Here's the Sex Pistols"
'TBPM' (BPM (beats per minute))                     '102.8'
'TCOM' (Composer)                                   'Glen Matlock/John Lydon/Paul Cook/Steve Jones'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'God Save the Queen'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '252466'
'TPE1' (Lead performer(s)/Soloist(s))               'Sex Pistols'
'TPE2' (Band/orchestra/accompaniment)               'The Sex Pistols'
'TPUB' (Publisher)                                  'Warner Brothers'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['punk', 'punk rock', 'british', '70s', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.93 dB'
'TXXX:replaygain_track_peak'                        '0.670266'

========================== row from database ==========================
                                              'id'  1534246
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/The Sex Pistols - Sex Pistols/sex pistols - never mind the bollocks here_s the sex pistols/sex pistols - never mind the bollocks - 06 - god save the queen.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  252
                                           'genre'  rock-gr-punk
                                        'filesize'  6061316
                                           'mtime'  1622659198
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner sex pistols never mind bollocks here_s sex pistols sex pistols never mind bollocks 06 god save queen rock gr punk
                                      'tag_artist'  The Sex Pistols
                                     'tag_release'  Never Mind the Bollocks Here's the Sex Pistols
                                       'tag_title'  God Save the Queen
                                             'bpm'  102.8
                                    'search_title'  'god':1 'queen':4 'save':2 'the':3
                                   'search_artist'  'pistols':3 'sex':2 'the':1
                                  'search_release'  'bollocks':4 'here':5 'heres':7 'mind':2 'never':1 'pistols':9 's':6 'sex':8 'the':3
                                     'search_rest'  'bollocks':9 'garage':2 'god':12 'gr':16 'here':10 'mind':8 'never':7 'pistols':6 'punk':1 'queen':14 'rock':15 's':11 'save':13 'sex':5 'stoner':4 'surf':3
                                    'search_combo'  'bollocks':11C,25 'garage':18 'god':1A,28 'gr':32 'here':12C,26 'heres':14C 'mind':9C,24 'never':8C,23 'pistols':7B,16C,22 'punk':17 'queen':4A,30 'rock':31 's':13C,27 'save':2A,29 'sex':6B,15C,21 'stoner':20 'surf':19 'the':3A,5B,10C
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', '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-3']
                                      'lastfmtags'  ['punk', 'punk rock', 'british', '70s', 'rock']
                                        'tag_date'  1977
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659197.772961  (2021-06-02 20:39:57)
                             'size'  6061316