======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '610'
                                          'artist'  'George Szell, Cleveland Orchestra'
                                     'text_people'  'Dvorak, Antonin'
                                         'release'  'Nodame Cantabile Best100'
                                           'title'  'Symphony #8 in G major, Op.88 - 2nd Movement'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'szell', 'conductor', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '8'
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '130.3'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000000B4 0000009B 000015D3 00001092 00043453 0008C97D 00005A74 00005D9C '
 '00044B63 00069C0A')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000780 00000000019ABEF0 00000000 00DF7A9D 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '8+122876A7A83DAAA6B6E8CBE6F90BFAB2+8533759'
'TALB' (Album/Movie/Show title)                     'Nodame Cantabile Best100'
'TBPM' (BPM (beats per minute))                     '130.3'
'TCOM' (Composer)                                   'Dvorak, Antonin'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1958'
'TENC' (Encoded by)                                 'iTunes v7.0.2.16'
'TIT2' (Title/songname/content description)         'Symphony #8 in G major, Op.88 - 2nd Movement'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'George Szell, Cleveland Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '3/8'
'TRCK' (Track number/Position in set)               '6/8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'szell', 'conductor', 'classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.06 dB'
'TXXX:replaygain_track_peak'                        '0.872608'

========================== row from database ==========================
                                              'id'  368106
                                            'path'  /data/Music/Bulk/00instruments-classical/Compilations/Nodame Cantabile Best100/3-06 Symphony #8 in G major, Op.88 - 2nd Movement.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  610
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  14695216
                                           'mtime'  1620561511
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Compilations 3 06 prerock classical classical instruments
                                      'tag_artist'  George Szell, Cleveland Orchestra
                                     'tag_release'  Nodame Cantabile Best100
                                       'tag_title'  Symphony #8 in G major, Op.88 - 2nd Movement
                                             'bpm'  130.3
                                    'search_title'  '2nd':11 '8':2,3 '88':9 'g':5 'in':4 'major':6,7 'movement':12 'op':8 'op88':10 'symphony':1
                                   'search_artist'  'cleveland':4 'george':1 'orchestra':5 'szell':2,3
                                  'search_release'  'best100':3 'cantabile':2 'nodame':1
                                     'search_rest'  '00instruments':1 '3':4 'classical':2 'compilations':3 'instruments':6 'prerock':5
                                    'search_combo'  '00instruments':21 '2nd':11A '3':24 '8':2A,3A '88':9A 'best100':20C 'cantabile':19C 'classical':22 'cleveland':16B 'compilations':23 'g':5A 'george':13B 'in':4A 'instruments':26 'major':6A,7A 'movement':12A 'nodame':18C 'op':8A 'op88':10A 'orchestra':17B 'prerock':25 'symphony':1A 'szell':14B,15B
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'szell', 'conductor', 'classical']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561511.3113234  (2021-05-09 13:58:31)
                             'size'  14695216