======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '672'
                                          'artist'  'Sergei Rachmaninoff'
                                     'text_people'  ''
                                         'release'  'Nodame Cantabile Best 100 Collection Box'
                                           'title'  'Piano Concerto no. 2 in C minor, op. 18: I. Moderato'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['russian', 'composers', 'piano', 'romantic', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '7'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '126'
                                             'key'  '5A'
                                        'acoustid'  'cf7415a8-3cfc-4079-a4eb-9845d3cdb82a'
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))                     '126'
'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)         'Piano Concerto no. 2 in C minor, op. 18: I. Moderato'
'TKEY' (Initial key)                                '5A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Sergei Rachmaninoff'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '5/8'
'TPUB' (Publisher)                                  'Sony Music Japan International Inc.'
'TRCK' (Track number/Position in set)               '1/7'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Rachmaninoff, Sergei'
'TXXX:ASIN'                                         'B000JS77FY'
'TXXX:Acoustid Id'                                  'cf7415a8-3cfc-4079-a4eb-9845d3cdb82a'
'TXXX:Artists'                                      'Sergei Rachmaninoff'
'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'                        '44b16e44-da77-4580-b851-0d765904573e'
'TXXX:MusicBrainz Release Group Id'                 'b0ae25a4-8df2-4628-82d2-2cd79932859f'
'TXXX:MusicBrainz Release Track Id'                 'cdc90190-ae69-3592-9e2e-993c4cedde18'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['russian', 'composers', 'piano', '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'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+3.00 dB'
'TXXX:replaygain_track_peak'                        '0.993559'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'12f4bd21-f8aa-4d81-971e-ea31aa0fd40b')

========================== row from database ==========================
                                              'id'  257171
                                            'path'  /data/Music/Bulk/0soundtrack/Nodame/Nodame Cantabile Best 100 - Disc 5/5-01 Piano Concerto #2 in C minor, Op.18 - 1st Movement.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  672
                                           'genre'  soundtrack-video
                                        'filesize'  16224222
                                           'mtime'  1638555467
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Disc 5 5 01 #2 Op.18 1st Movement soundtrack video
                                      'tag_artist'  Sergei Rachmaninoff
                                     'tag_release'  Nodame Cantabile Best 100 Collection Box
                                       'tag_title'  Piano Concerto no. 2 in C minor, op. 18: I. Moderato
                                             'bpm'  126.0
                                    'search_title'  '18':12,13 '2':5 'c':7 'concerto':2 'i':14,15 'in':6 'minor':8,9 'moderato':16 'no':3,4 'op':10,11 'piano':1
                                   'search_artist'  'rachmaninoff':2 'sergei':1
                                  'search_release'  '100':4 'best':3 'box':6 'cantabile':2 'collection':5 'nodame':1
                                     'search_rest'  '0soundtrack':1 '18':7 '1st':9 '2':4,5 '5':3 'disc':2 'movement':10 'op':6 'op18':8 'soundtrack':11 'video':12
                                    'search_combo'  '0soundtrack':25 '100':22C '18':12A,13A,31 '1st':33 '2':5A,28,29 '5':27 'best':21C 'box':24C 'c':7A 'cantabile':20C 'collection':23C 'concerto':2A 'disc':26 'i':14A,15A 'in':6A 'minor':8A,9A 'moderato':16A 'movement':34 'no':3A,4A 'nodame':19C 'op':10A,11A,30 'op18':32 'piano':1A 'rachmaninoff':18B 'sergei':17B 'soundtrack':35 'video':36
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['russian', 'composers', 'piano', 'romantic', 'classical']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1638555467.4606967  (2021-12-03 19:17:47)
                             'size'  16224222