======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '320'
                                          'artist'  "Flipper's Guitar"
                                     'text_people'  ''
                                         'release'  "Doctor Head's World Tower"
                                           'title'  'Sleep Machine'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['shibuya kei', 'neo acoustic', 'japanese', 'pop', 'j pop']"
                                     'discogstags'  "['rock', 'pop', 'acoustic', 'indie pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock-shibuyakei;set-pl-sced'
                                             'bpm'  '100.157'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000003EC 000005AD 0000146A'
'COMM:iTunNORM:eng'                                 (' 000003EC 000005AD 0000146A 000014B9 0003F7B7 0000C395 000071E7 0000708E '
 '0003F7E5 0003F7E5')
'TALB' (Album/Movie/Show title)                     "Doctor Head's World Tower"
'TBPM' (BPM (beats per minute))                     '100.157'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock-shibuyakei', 'set-pl-sced']
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Sleep Machine'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               "Flipper's Guitar"
'TPE2' (Band/orchestra/accompaniment)               "Flipper's Guitar"
'TRCK' (Track number/Position in set)               '5'
'TSSE' (Software/Hardware and settings used for encoding)  'SuperTagEditor Ver 2.01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'acoustic', 'indie pop']
'TXXX:lastfmtags'                                   ['shibuya kei', 'neo acoustic', 'japanese', 'pop', 'j pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.56 dB'
'TXXX:replaygain_track_peak'                        '0.670102'

========================== row from database ==========================
                                              'id'  1533206
                                            'path'  /data/Music/Bulk/00localcharacter/Flipper_s Guitar/[1991] Doctor Head's World Tower/05 Sleep Machine.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  320
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock-shibuyakei;set-pl-sced
                                        'filesize'  7716864
                                           'mtime'  1621489413
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Flipper_s [1991] 05 loc asia japan;loc asia japan jrock shibuyakei;set pl sced
                                      'tag_artist'  Flipper's Guitar
                                     'tag_release'  Doctor Head's World Tower
                                       'tag_title'  Sleep Machine
                                             'bpm'  100.157
                                    'search_title'  'machine':2 'sleep':1
                                   'search_artist'  'flipper':1 'flippers':3 'guitar':4 's':2
                                  'search_release'  'doctor':1 'head':2 'heads':4 's':3 'tower':6 'world':5
                                     'search_rest'  '1991':3,4 'asia':6 'flipper':1 'japan':7,9,11 'jrock':12 'loc':5,8,10 'pl':17 's':2 'sced':18 'set':14,16 'shibuyakei':13,15
                                    'search_combo'  '1991':15,16 'asia':18 'doctor':7C 'flipper':3B,13 'flippers':5B 'guitar':6B 'head':8C 'heads':10C 'japan':19,21,23 'jrock':24 'loc':17,20,22 'machine':2A 'pl':29 's':4B,9C,14 'sced':30 'set':26,28 'shibuyakei':25,27 'sleep':1A 'tower':12C 'world':11C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['shibuya kei', 'neo acoustic', 'japanese', 'pop', 'j pop']
                                        'tag_date'  1991
                                     'discogstags'  ['rock', 'pop', 'acoustic', 'indie pop']

============================== file details ==============================
                                           'mtime'  1621489413.0272064  (2021-05-20 07:43:33)
                             'size'  7716864