======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '229'
                                          'artist'  'Kosuge Yu'
                                     'text_people'  'Lizst, Franz'
                                         'release'  'Nodame Cantabile Best100'
                                           'title'  'Transcendantal Etude - #5 in B-flat major "Feux Follets"'
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                                      'lastfmtags'  "['piano', 'classical', 'classical piano']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '12'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '145.4'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000000A9 000000A0 00000DD8 00000E0D 0001712F 000274FA 000043EC 000048A4 '
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'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000007EC 00000000009A6B84 00000000 0053FB98 00000000 '
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'COMM:iTunes_CDDB_IDs:eng'                          '12+455DE4EA6E2F4E66AC94D52A5BBE8741+8524263'
'TALB' (Album/Movie/Show title)                     'Nodame Cantabile Best100'
'TBPM' (BPM (beats per minute))                     '145.4'
'TCOM' (Composer)                                   'Lizst, Franz'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2002'
'TENC' (Encoded by)                                 'iTunes v7.0.2.16'
'TIT2' (Title/songname/content description)         'Transcendantal Etude - #5 in B-flat major "Feux Follets"'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kosuge Yu'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '7/8'
'TRCK' (Track number/Position in set)               '11/12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'classical', 'classical piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
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'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.801136'

========================== row from database ==========================
                                              'id'  396936
                                            'path'  /data/Music/Bulk/00instruments-classical/Compilations/Nodame Cantabile Best100/7-11 Transcendantal Etude - #5 in B-flat major _Feux Follets_.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  229
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  5553168
                                           'mtime'  1620574152
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Compilations 7 11 _Feux Follets_ prerock classical classical instruments
                                      'tag_artist'  Kosuge Yu
                                     'tag_release'  Nodame Cantabile Best100
                                       'tag_title'  Transcendantal Etude - #5 in B-flat major "Feux Follets"
                                             'bpm'  145.4
                                    'search_title'  '5':3,4 'b':6 'bflat':8 'etude':2 'feux':10 'flat':7 'follets':11 'in':5 'major':9 'transcendantal':1
                                   'search_artist'  'kosuge':1 'yu':2
                                  'search_release'  'best100':3 'cantabile':2 'nodame':1
                                     'search_rest'  '00instruments':1 '7':4 'classical':2 'compilations':3 'feux':5 'follets':6 'instruments':8 'prerock':7
                                    'search_combo'  '00instruments':17 '5':3A,4A '7':20 'b':6A 'best100':16C 'bflat':8A 'cantabile':15C 'classical':18 'compilations':19 'etude':2A 'feux':10A,21 'flat':7A 'follets':11A,22 'in':5A 'instruments':24 'kosuge':12B 'major':9A 'nodame':14C 'prerock':23 'transcendantal':1A 'yu':13B
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['piano', 'classical', 'classical piano']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620574151.8056502  (2021-05-09 17:29:11)
                             'size'  5553168