======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '27'
                                          'artist'  'Johannes Brahms'
                                     'text_people'  ''
                                         'release'  'Nodame Cantabile Best 100 Collection Box'
                                           'title'  'Variations on a Theme by Paganini book I: Variation III'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-2', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['composers', 'german', 'instrumental', 'romantic', 'classical']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '36'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '110'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '0'
'TALB' (Album/Movie/Show title)                     'Nodame Cantabile Best 100 Collection Box'
'TBPM' (BPM (beats per minute))                     '110'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2007-01-01'
'TIT2' (Title/songname/content description)         'Variations on a Theme by Paganini book I: Variation III'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Johannes Brahms'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '8/8'
'TPUB' (Publisher)                                  'Sony Music Japan International Inc.'
'TRCK' (Track number/Position in set)               '4/36'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Brahms, Johannes'
'TXXX:ASIN'                                         'B000JS77FY'
'TXXX:Artists'                                      'Johannes Brahms'
'TXXX:BARCODE'                                      '4547366028485'
'TXXX:CATALOGNUMBER'                                'SICC-631'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '07ee3d9d-b7ce-4bf3-a252-9d3819d2d9ac'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'pseudo-release'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'c70d12a2-24fe-4f83-a6e6-57d84f8efb51'
'TXXX:MusicBrainz Release Group Id'                 'b0ae25a4-8df2-4628-82d2-2cd79932859f'
'TXXX:MusicBrainz Release Track Id'                 'fd69d708-47e3-3100-8b11-352497d54bac'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['composers', 'german', 'instrumental', 'romantic', 'classical']
'TXXX:originalyear'                                 '2006'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+2.93 dB'
'TXXX:replaygain_track_peak'                        '0.511353'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'354976ab-c303-4a9f-b8a6-aab6547b76ea')

========================== row from database ==========================
                                              'id'  262312
                                            'path'  /data/Music/Bulk/0soundtrack/Nodame/Nodame Cantabile Best 100 - Disc 8/8-04 Variation on a theme by Paganini, Op.35 - Book I, Variation 3.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  27
                                           'genre'  soundtrack-video
                                        'filesize'  740338
                                           'mtime'  1638555471
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Disc 8 8 04 theme Paganini, Op.35 Book I, 3 soundtrack video
                                      'tag_artist'  Johannes Brahms
                                     'tag_release'  Nodame Cantabile Best 100 Collection Box
                                       'tag_title'  Variations on a Theme by Paganini book I: Variation III
                                             'bpm'  110.0
                                    'search_title'  'a':3 'book':7 'by':5 'i':8,9 'iii':11 'on':2 'paganini':6 'theme':4 'variation':10 'variations':1
                                   'search_artist'  'brahms':2 'johannes':1
                                  'search_release'  '100':4 'best':3 'box':6 'cantabile':2 'collection':5 'nodame':1
                                     'search_rest'  '0soundtrack':1 '3':13 '35':8 '8':3 'book':10 'disc':2 'i':11,12 'op':7 'op35':9 'paganini':5,6 'soundtrack':14 'theme':4 'video':15
                                    'search_combo'  '0soundtrack':20 '100':17C '3':32 '35':27 '8':22 'a':3A 'best':16C 'book':7A,29 'box':19C 'brahms':13B 'by':5A 'cantabile':15C 'collection':18C 'disc':21 'i':8A,9A,30,31 'iii':11A 'johannes':12B 'nodame':14C 'on':2A 'op':26 'op35':28 'paganini':6A,24,25 'soundtrack':33 'theme':4A,23 'variation':10A 'variations':1A 'video':34
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['composers', 'german', 'instrumental', 'romantic', 'classical']
                                        'tag_date'  2007
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1638555471.4349935  (2021-12-03 19:17:51)
                             'size'  740338