======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '134'
                                          'artist'  'Polysics'
                                     'text_people'  'Hayashi'
                                         'release'  'National P'
                                           'title'  'Schizoid Vow!!'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new wave', 'rock', 'electronic', 'japanese', 'j rock']"
                                     'discogstags'  "['new wave', 'punk', 'electronic', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '14'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;rock-gr-punk-jpunk'
                                             'bpm'  '145.580'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 000043A7 00002A31 000123DC'
'COMM:iTunNORM:eng'                                 (' 000043A7 00002A31 000123DC 00012311 0000F70A 0000E88D 00008F3E 00008E69 '
 '00000DE0 00005C8D')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000780 00000000005A54F0 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '14+8720CC0A3B5494280DD04B8D63A3BD96+3419650'
'TALB' (Album/Movie/Show title)                     'National P'
'TBPM' (BPM (beats per minute))                     '145.580'
'TCOM' (Composer)                                   'Hayashi'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'rock-gr-punk-jpunk']
'TDRC' (Recording time)                             '2003'
'TENC' (Encoded by)                                 'iTunes v6.0.2.23'
'TIT2' (Title/songname/content description)         'Schizoid Vow!!'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Polysics'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '8/14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['new wave', 'punk', 'electronic', 'rock']
'TXXX:lastfmtags'                                   ['new wave', 'rock', 'electronic', 'japanese', 'j rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.94 dB'
'TXXX:replaygain_track_peak'                        '0.336684'

========================== row from database ==========================
                                              'id'  935580
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/POLYSICS/Polysics - [2003.10.29][album][320] National P/08 Schizoid Vow!!.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  134
                                           'genre'  loc-asia-japan;rock-gr-punk-jpunk
                                        'filesize'  5374021
                                           'mtime'  1637019983
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia POLYSICS [2003.10.29][album][320] 08 loc asia japan;rock gr punk jpunk
                                      'tag_artist'  Polysics
                                     'tag_release'  National P
                                       'tag_title'  Schizoid Vow!!
                                             'bpm'  145.58
                                    'search_title'  'schizoid':1 'vow':2
                                   'search_artist'  'polysics':1
                                  'search_release'  'national':1 'p':2
                                     'search_rest'  '00asia':1 '10':4 '2003':3 '20031029album320':8 '29':5 '320':7 'album':6 'asia':10 'gr':15 'japan':11,13 'jpunk':17 'loc':9 'polysics':2 'punk':16 'rock':12,14
                                    'search_combo'  '00asia':6 '10':9 '2003':8 '20031029album320':13 '29':10 '320':12 'album':11 'asia':15 'gr':20 'japan':16,18 'jpunk':22 'loc':14 'national':4C 'p':5C 'polysics':3B,7 'punk':21 'rock':17,19 'schizoid':1A 'vow':2A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['new wave', 'rock', 'electronic', 'japanese', 'j rock']
                                        'tag_date'  2003
                                     'discogstags'  ['new wave', 'punk', 'electronic', 'rock']

============================== file details ==============================
                                           'mtime'  1637019982.65856  (2021-11-16 00:46:22)
                             'size'  5374021