======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '271'
                                          'artist'  'Audio'
                                     'text_people'  ''
                                         'release'  "Zarathustra's Revenge"
                                           'title'  'Sguardo verso il cielo'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['neurofunk', 'dnb', 'darkstep', 'darkside', 'drum and bass', 'drum n bass']"
                                     'discogstags'  "['electronic', 'drum n bass']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '12'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '95'
                                             'key'  '8A'
                                        'acoustid'  '5c8847c7-aaef-462c-86e4-3db0a3c3434f'
rest: ''

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

'COMM::eng'                                         '256 Kbits'
'COMM:ID3v1 Comment:XXX'                            '256 Kbits'
'PRIV:AverageLevel:Y\x11\x00\x00'                   PRIV(owner='AverageLevel', data=b'Y\x11\x00\x00')
'PRIV:PeakValue:y\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'y\x7f\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
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'TALB' (Album/Movie/Show title)                     "Zarathustra's Revenge"
'TBPM' (BPM (beats per minute))                     '95'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Sguardo verso il cielo'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Audio'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '3/4'
'TPUB' (Publisher)                                  'Mellow Records'
'TRCK' (Track number/Position in set)               '3/12'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Audio'
'TXXX:Acoustid Id'                                  '5c8847c7-aaef-462c-86e4-3db0a3c3434f'
'TXXX:Artists'                                      'Audio'
'TXXX:CATALOGNUMBER'                                'MMP 328 A/B/C/D'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '06594af9-7b03-4523-9e1b-276d351f7a28'
'TXXX:MusicBrainz Album Release Country'            'IT'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'b0cfa891-8e35-42c6-9b5a-5b18e52b559d'
'TXXX:MusicBrainz Release Group Id'                 '0de2360b-8773-4586-9239-d4f53bb26c1b'
'TXXX:MusicBrainz Release Track Id'                 '04f36ff1-b846-34ba-81de-2f406e0b5f0b'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'drum n bass']
'TXXX:lastfmtags'                                   ['neurofunk', 'dnb', 'darkstep', 'darkside', 'drum and bass', 'drum n bass']
'TXXX:originalyear'                                 '1997'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'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'                        '-0.33 dB'
'TXXX:replaygain_track_peak'                        '0.704217'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'46f8c254-436b-4d89-aa41-609e727c85ba')

========================== row from database ==========================
                                              'id'  1410165
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Algebra - Italian Prog Tribute/cd 3/303 - audio - sguardo verso il cielo (le orme).mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  271
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  8706347
                                           'mtime'  1620736022
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Algebra Italian Prog Tribute cd 3 303 audio sguardo (le orme) rock cppex progressive;set pl progspace
                                      'tag_artist'  Audio
                                     'tag_release'  Zarathustra's Revenge
                                       'tag_title'  Sguardo verso il cielo
                                             'bpm'  95.0
                                    'search_title'  'cielo':4 'il':3 'sguardo':1 'verso':2
                                   'search_artist'  'audio':1
                                  'search_release'  'revenge':4 's':2 'zarathustra':1 'zarathustras':3
                                     'search_rest'  '3':7 '303':8 'algebra':2 'audio':9 'cd':6 'classicprogpsy':1 'cppex':16 'italian':3 'le':11,12 'orme':13,14 'pl':21 'prog':4 'progressive':17,19 'progspace':22 'rock':15 'set':18,20 'sguardo':10 'tribute':5
                                    'search_combo'  '3':16 '303':17 'algebra':11 'audio':5B,18 'cd':15 'cielo':4A 'classicprogpsy':10 'cppex':25 'il':3A 'italian':12 'le':20,21 'orme':22,23 'pl':30 'prog':13 'progressive':26,28 'progspace':31 'revenge':9C 'rock':24 's':7C 'set':27,29 'sguardo':1A,19 'tribute':14 'verso':2A 'zarathustra':6C 'zarathustras':8C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['neurofunk', 'dnb', 'darkstep', 'darkside', 'drum and bass', 'drum n bass']
                                        'tag_date'  1997
                                     'discogstags'  ['electronic', 'drum n bass']

============================== file details ==============================
                                           'mtime'  1620736022.2839565  (2021-05-11 14:27:02)
                             'size'  8706347